Q.Why does a farrier put thehorse-shoeonhot?A. That it maystick the closer, when it has contracted by cold.
Q.Why does a farrier put thehorse-shoeonhot?
Q.Why does a farrier put thehorse-shoeonhot?
A. That it maystick the closer, when it has contracted by cold.
A. That it maystick the closer, when it has contracted by cold.
Q.Why does astovemake acracking noise, when a fire is very hot?A. The iron stoveexpands by heat, and (as it swells) the parts rub bothagainst each other, andagainst the bricks around, driving them further off; and this produces acrackingnoise.
Q.Why does astovemake acracking noise, when a fire is very hot?
Q.Why does astovemake acracking noise, when a fire is very hot?
A. The iron stoveexpands by heat, and (as it swells) the parts rub bothagainst each other, andagainst the bricks around, driving them further off; and this produces acrackingnoise.
A. The iron stoveexpands by heat, and (as it swells) the parts rub bothagainst each other, andagainst the bricks around, driving them further off; and this produces acrackingnoise.
Q.Why does astovemake a similarcracking noise, when a largefireistaken down?A. The iron stovecontracts again,as soon as the fire is removed; and (as it shrinks into a smaller space) the partsrub against each other again, and thebricks are again disturbed; and this produces a cracking noise.
Q.Why does astovemake a similarcracking noise, when a largefireistaken down?
Q.Why does astovemake a similarcracking noise, when a largefireistaken down?
A. The iron stovecontracts again,as soon as the fire is removed; and (as it shrinks into a smaller space) the partsrub against each other again, and thebricks are again disturbed; and this produces a cracking noise.
A. The iron stovecontracts again,as soon as the fire is removed; and (as it shrinks into a smaller space) the partsrub against each other again, and thebricks are again disturbed; and this produces a cracking noise.
Q.Why does theplasterround astove crackand fall away?A. When the fire is lighted,the iron-work(which expands more than the brick-work and plaster)pushes away the bricks and plaster: but when the fire is put out, the metalshrinksagain, andleaves the “setting” behind.
Q.Why does theplasterround astove crackand fall away?
Q.Why does theplasterround astove crackand fall away?
A. When the fire is lighted,the iron-work(which expands more than the brick-work and plaster)pushes away the bricks and plaster: but when the fire is put out, the metalshrinksagain, andleaves the “setting” behind.
A. When the fire is lighted,the iron-work(which expands more than the brick-work and plaster)pushes away the bricks and plaster: but when the fire is put out, the metalshrinksagain, andleaves the “setting” behind.
Q.Why does theplaster fall away?A. As achinkis left (between the “setting” and the stove), the plaster will frequently fall awayfrom its own weight.
Q.Why does theplaster fall away?
Q.Why does theplaster fall away?
A. As achinkis left (between the “setting” and the stove), the plaster will frequently fall awayfrom its own weight.
A. As achinkis left (between the “setting” and the stove), the plaster will frequently fall awayfrom its own weight.
Q.Whatothercause contributes tobringtheplaster down?A. As theheat of the firevaries, thesize of the iron stovevaries also; and this swelling and perpetually contracting, keeps up such aconstant disturbance about the plaster, that itcracks and falls off, leaving the fire-place very unsightly.
Q.Whatothercause contributes tobringtheplaster down?
Q.Whatothercause contributes tobringtheplaster down?
A. As theheat of the firevaries, thesize of the iron stovevaries also; and this swelling and perpetually contracting, keeps up such aconstant disturbance about the plaster, that itcracks and falls off, leaving the fire-place very unsightly.
A. As theheat of the firevaries, thesize of the iron stovevaries also; and this swelling and perpetually contracting, keeps up such aconstant disturbance about the plaster, that itcracks and falls off, leaving the fire-place very unsightly.
Q.Why does themercuryof athermometer risein hot weather?A. Heatexpands the metal; and as the metal isincreased in bulk, it occupies alarger space, (or, in other words, rises higher in the tube.)
Q.Why does themercuryof athermometer risein hot weather?
Q.Why does themercuryof athermometer risein hot weather?
A. Heatexpands the metal; and as the metal isincreased in bulk, it occupies alarger space, (or, in other words, rises higher in the tube.)
A. Heatexpands the metal; and as the metal isincreased in bulk, it occupies alarger space, (or, in other words, rises higher in the tube.)
Q.Why is aglass broken, whenhot wateris poured into it?A. Because theinside of the glassis expanded by the hot water, andnot the outside; so the glasssnapsfor want offlexibility.
Q.Why is aglass broken, whenhot wateris poured into it?
Q.Why is aglass broken, whenhot wateris poured into it?
A. Because theinside of the glassis expanded by the hot water, andnot the outside; so the glasssnapsfor want offlexibility.
A. Because theinside of the glassis expanded by the hot water, andnot the outside; so the glasssnapsfor want offlexibility.
Q.Why is not theoutsideof theglassexpanded by the hot water, as well as theinside?A. Glass is anon-conductor of heat; and, therefore,breaksbefore the heat of theinner surfaceisconducted to the outside.
Q.Why is not theoutsideof theglassexpanded by the hot water, as well as theinside?
Q.Why is not theoutsideof theglassexpanded by the hot water, as well as theinside?
A. Glass is anon-conductor of heat; and, therefore,breaksbefore the heat of theinner surfaceisconducted to the outside.
A. Glass is anon-conductor of heat; and, therefore,breaksbefore the heat of theinner surfaceisconducted to the outside.
Q.Why does aglasssnap, because theinnersurface ishotterthan theouter?A.Glass is expanded by heat; and as the inner surface expands,it stretches the outer surface till it snaps.
Q.Why does aglasssnap, because theinnersurface ishotterthan theouter?
Q.Why does aglasssnap, because theinnersurface ishotterthan theouter?
A.Glass is expanded by heat; and as the inner surface expands,it stretches the outer surface till it snaps.
A.Glass is expanded by heat; and as the inner surface expands,it stretches the outer surface till it snaps.
Q.Why is achina cupbroken, ifhot waterbe poured over it, or into it?A. China is anon-conductor; and, as theinner surface expands by the heat, before theouter one,it forms an arch, and pulls the parts of the cup asunder.
Q.Why is achina cupbroken, ifhot waterbe poured over it, or into it?
Q.Why is achina cupbroken, ifhot waterbe poured over it, or into it?
A. China is anon-conductor; and, as theinner surface expands by the heat, before theouter one,it forms an arch, and pulls the parts of the cup asunder.
A. China is anon-conductor; and, as theinner surface expands by the heat, before theouter one,it forms an arch, and pulls the parts of the cup asunder.
Q.Why does thebottom come off, if aglass beakerbe set on a warmhob?A. Glass is anon-conductor; and, as thebottom of the glass(from the warmth of the hot stove)expands, before the sides are heated, the two partsseparatethe one from the other.
Q.Why does thebottom come off, if aglass beakerbe set on a warmhob?
Q.Why does thebottom come off, if aglass beakerbe set on a warmhob?
A. Glass is anon-conductor; and, as thebottom of the glass(from the warmth of the hot stove)expands, before the sides are heated, the two partsseparatethe one from the other.
A. Glass is anon-conductor; and, as thebottom of the glass(from the warmth of the hot stove)expands, before the sides are heated, the two partsseparatethe one from the other.
Q.What is meant byliquefaction?A. Thestate of being melted; as ice is melted by the heat of the sun.
Q.What is meant byliquefaction?
Q.What is meant byliquefaction?
A. Thestate of being melted; as ice is melted by the heat of the sun.
A. Thestate of being melted; as ice is melted by the heat of the sun.
Q.Why isice meltedby theheatof thesun?A. Theheat of the sun(entering the solid ice)forces its particles asunder, till their attraction of cohesion is sufficiently overcome, toconvert the solid ice into liquid. (See p.112.)
Q.Why isice meltedby theheatof thesun?
Q.Why isice meltedby theheatof thesun?
A. Theheat of the sun(entering the solid ice)forces its particles asunder, till their attraction of cohesion is sufficiently overcome, toconvert the solid ice into liquid. (See p.112.)
A. Theheat of the sun(entering the solid ice)forces its particles asunder, till their attraction of cohesion is sufficiently overcome, toconvert the solid ice into liquid. (See p.112.)
Q.Why aremetals meltedby the heat offire?A. Theheat of the fire(entering the solid metal)forces its particles asunder, till their attraction of cohesion is sufficiently overcome, toconvert the solid metal to a liquid.
Q.Why aremetals meltedby the heat offire?
Q.Why aremetals meltedby the heat offire?
A. Theheat of the fire(entering the solid metal)forces its particles asunder, till their attraction of cohesion is sufficiently overcome, toconvert the solid metal to a liquid.
A. Theheat of the fire(entering the solid metal)forces its particles asunder, till their attraction of cohesion is sufficiently overcome, toconvert the solid metal to a liquid.
Q.Why iswaterconverted tosteamby the heat offire?A. Theheat of the fire(entering the water)divides its globules into very minute bubbles, which (being made lighter than air) fly off from the surfacein the form of steam.
Q.Why iswaterconverted tosteamby the heat offire?
Q.Why iswaterconverted tosteamby the heat offire?
A. Theheat of the fire(entering the water)divides its globules into very minute bubbles, which (being made lighter than air) fly off from the surfacein the form of steam.
A. Theheat of the fire(entering the water)divides its globules into very minute bubbles, which (being made lighter than air) fly off from the surfacein the form of steam.
Q.Why does notwood melt, like metal?A. Because the heat of the firedecomposesthe wood intogas, smoke, and ashes; and the different partsseparate from each other.
Q.Why does notwood melt, like metal?
Q.Why does notwood melt, like metal?
A. Because the heat of the firedecomposesthe wood intogas, smoke, and ashes; and the different partsseparate from each other.
A. Because the heat of the firedecomposesthe wood intogas, smoke, and ashes; and the different partsseparate from each other.
Q.What is meant byvaporization?A. Theconversion of liquid into vapour; as water is converted into vapour by the heat of the sun.
Q.What is meant byvaporization?
Q.What is meant byvaporization?
A. Theconversion of liquid into vapour; as water is converted into vapour by the heat of the sun.
A. Theconversion of liquid into vapour; as water is converted into vapour by the heat of the sun.
Q.What areclouds?A. Moistureevaporated from the earth, and collected in the upper regions of the air.
Q.What areclouds?
Q.What areclouds?
A. Moistureevaporated from the earth, and collected in the upper regions of the air.
A. Moistureevaporated from the earth, and collected in the upper regions of the air.
Q.What is the difference between afogand acloud?A. Clouds and fogs differ only in one respect.Clouds are elevated above our heads: butfogs come in contact with the surface of the earth.
Q.What is the difference between afogand acloud?
Q.What is the difference between afogand acloud?
A. Clouds and fogs differ only in one respect.Clouds are elevated above our heads: butfogs come in contact with the surface of the earth.
A. Clouds and fogs differ only in one respect.Clouds are elevated above our heads: butfogs come in contact with the surface of the earth.
Q.Ifcloudsarewater, why do theyfloaton the air?A. 1st—The vapour of clouds is composed ofvery minute bubbles(called ves’cicles), which float likesoap bubbles: and2ndly—Warm air (between the bubbles)keeps them apart, and makes the masslighter; and the currents of air (which constantly ascend from the warm earth)buoy them up.
Q.Ifcloudsarewater, why do theyfloaton the air?
Q.Ifcloudsarewater, why do theyfloaton the air?
A. 1st—The vapour of clouds is composed ofvery minute bubbles(called ves’cicles), which float likesoap bubbles: and2ndly—Warm air (between the bubbles)keeps them apart, and makes the masslighter; and the currents of air (which constantly ascend from the warm earth)buoy them up.
A. 1st—The vapour of clouds is composed ofvery minute bubbles(called ves’cicles), which float likesoap bubbles: and
2ndly—Warm air (between the bubbles)keeps them apart, and makes the masslighter; and the currents of air (which constantly ascend from the warm earth)buoy them up.
Q.Why doesvapoursometimes form intoclouds, and sometimes rest upon the earth asmistorfog?A. When thesurface of the earthiswarmer than the air, the vapour of the earth (being condensed by the chill air) becomesmist or fog. But when theairiswarmer than the earth, the vapourrises through the air, and becomes cloud.
Q.Why doesvapoursometimes form intoclouds, and sometimes rest upon the earth asmistorfog?
Q.Why doesvapoursometimes form intoclouds, and sometimes rest upon the earth asmistorfog?
A. When thesurface of the earthiswarmer than the air, the vapour of the earth (being condensed by the chill air) becomesmist or fog. But when theairiswarmer than the earth, the vapourrises through the air, and becomes cloud.
A. When thesurface of the earthiswarmer than the air, the vapour of the earth (being condensed by the chill air) becomesmist or fog. But when theairiswarmer than the earth, the vapourrises through the air, and becomes cloud.
Q.Areallcloudsalike?A. No. They vary greatly indensity, height, and colour.
Q.Areallcloudsalike?
Q.Areallcloudsalike?
A. No. They vary greatly indensity, height, and colour.
A. No. They vary greatly indensity, height, and colour.
Q.What is the chiefcauseof fog andclouds?A. The changes of the wind.
Q.What is the chiefcauseof fog andclouds?
Q.What is the chiefcauseof fog andclouds?
A. The changes of the wind.
A. The changes of the wind.
Q.How can thechangesof thewindaffect theclouds?A. If acold current of windblows suddenly over any region, itcondensesthe invisible vapour of the air intocloud or rain: but if awarm current of wind, blows over any region, itdispersesthe clouds, byabsorbing their vapour.
Q.How can thechangesof thewindaffect theclouds?
Q.How can thechangesof thewindaffect theclouds?
A. If acold current of windblows suddenly over any region, itcondensesthe invisible vapour of the air intocloud or rain: but if awarm current of wind, blows over any region, itdispersesthe clouds, byabsorbing their vapour.
A. If acold current of windblows suddenly over any region, itcondensesthe invisible vapour of the air intocloud or rain: but if awarm current of wind, blows over any region, itdispersesthe clouds, byabsorbing their vapour.
Q.Whatcountriesare themost cloudy?A. Those where the winds aremost variable, as Britain.
Q.Whatcountriesare themost cloudy?
Q.Whatcountriesare themost cloudy?
A. Those where the winds aremost variable, as Britain.
A. Those where the winds aremost variable, as Britain.
Q.Whatcountriesare theleastcloudy?A. Those where the winds arenot variable, as Egypt.
Q.Whatcountriesare theleastcloudy?
Q.Whatcountriesare theleastcloudy?
A. Those where the winds arenot variable, as Egypt.
A. Those where the winds arenot variable, as Egypt.
Q.Whatdistanceare thecloudsfrom theearth?A. Somethin light cloudsare elevated above the highest mountain-top; someheavyones touch the steeples, trees, andeven the earth: but theaverageheight is betweenone and two miles.(Streaky curling clouds,like hair, are often five or six miles high.)
Q.Whatdistanceare thecloudsfrom theearth?
Q.Whatdistanceare thecloudsfrom theearth?
A. Somethin light cloudsare elevated above the highest mountain-top; someheavyones touch the steeples, trees, andeven the earth: but theaverageheight is betweenone and two miles.(Streaky curling clouds,like hair, are often five or six miles high.)
A. Somethin light cloudsare elevated above the highest mountain-top; someheavyones touch the steeples, trees, andeven the earth: but theaverageheight is betweenone and two miles.
(Streaky curling clouds,like hair, are often five or six miles high.)
Q.Whatcloudsare thelowest?A. Those that aremost highly electrified: lightning clouds are rarely more than about 700 yards above the ground; and very often actuallytouch the earth with one of their edges.
Q.Whatcloudsare thelowest?
Q.Whatcloudsare thelowest?
A. Those that aremost highly electrified: lightning clouds are rarely more than about 700 yards above the ground; and very often actuallytouch the earth with one of their edges.
A. Those that aremost highly electrified: lightning clouds are rarely more than about 700 yards above the ground; and very often actuallytouch the earth with one of their edges.
Q.What is thethicknessof theclouds?A. Some clouds are 20square miles in surface, and abovea mile in thickness; while others are only afew yards or inches.
Q.What is thethicknessof theclouds?
Q.What is thethicknessof theclouds?
A. Some clouds are 20square miles in surface, and abovea mile in thickness; while others are only afew yards or inches.
A. Some clouds are 20square miles in surface, and abovea mile in thickness; while others are only afew yards or inches.
Q.How can persons ascertain the thickness of a cloud?A. As thetops of high mountainsare generallyabove the clouds; therefore, travellers (who climb the mountains) maypass quite through the clouds, into a clear blue firmament, when they may see the cloudsbeneath their feet.
Q.How can persons ascertain the thickness of a cloud?
Q.How can persons ascertain the thickness of a cloud?
A. As thetops of high mountainsare generallyabove the clouds; therefore, travellers (who climb the mountains) maypass quite through the clouds, into a clear blue firmament, when they may see the cloudsbeneath their feet.
A. As thetops of high mountainsare generallyabove the clouds; therefore, travellers (who climb the mountains) maypass quite through the clouds, into a clear blue firmament, when they may see the cloudsbeneath their feet.
Q.Why are thecloudssovariableinshape?A. Theshapeof clouds depends upon two things:—Their state ofelectricity, andthe wind.
Q.Why are thecloudssovariableinshape?
Q.Why are thecloudssovariableinshape?
A. Theshapeof clouds depends upon two things:—Their state ofelectricity, andthe wind.
A. Theshapeof clouds depends upon two things:—Their state ofelectricity, andthe wind.
Q.How canelectricityaffect theshapeofclouds?A. If one cloud befull of electricity, and anothernot, they will beattracted to each other, and either coalesce,—diminish in size,—or vanish altogether.
Q.How canelectricityaffect theshapeofclouds?
Q.How canelectricityaffect theshapeofclouds?
A. If one cloud befull of electricity, and anothernot, they will beattracted to each other, and either coalesce,—diminish in size,—or vanish altogether.
A. If one cloud befull of electricity, and anothernot, they will beattracted to each other, and either coalesce,—diminish in size,—or vanish altogether.
Q.Which clouds assume the mostfantasticshapes?A. Those that are the mosthighly electrified.
Q.Which clouds assume the mostfantasticshapes?
Q.Which clouds assume the mostfantasticshapes?
A. Those that are the mosthighly electrified.
A. Those that are the mosthighly electrified.
Q.What effect havewindson theshapeofclouds?A. They sometimesabsorb them entirely: sometimesincrease their volume and density; and sometimeschange the position of their parts.
Q.What effect havewindson theshapeofclouds?
Q.What effect havewindson theshapeofclouds?
A. They sometimesabsorb them entirely: sometimesincrease their volume and density; and sometimeschange the position of their parts.
A. They sometimesabsorb them entirely: sometimesincrease their volume and density; and sometimeschange the position of their parts.
Q.How canwinds absorb cloudsaltogether?A.A warm dry windwill convert the substance of the clouds intoinvisible vapour, and carry it in its own current.
Q.How canwinds absorb cloudsaltogether?
Q.How canwinds absorb cloudsaltogether?
A.A warm dry windwill convert the substance of the clouds intoinvisible vapour, and carry it in its own current.
A.A warm dry windwill convert the substance of the clouds intoinvisible vapour, and carry it in its own current.
Q.How canwinds increasethe bulk and density ofclouds?A. Acoldcurrent of wind willcondense the invisible vapour of the air, andadd it to the cloudsas it passes by.
Q.How canwinds increasethe bulk and density ofclouds?
Q.How canwinds increasethe bulk and density ofclouds?
A. Acoldcurrent of wind willcondense the invisible vapour of the air, andadd it to the cloudsas it passes by.
A. Acoldcurrent of wind willcondense the invisible vapour of the air, andadd it to the cloudsas it passes by.
Q.How canwinds changetheshapeofcloudsby altering the position of their parts?A. Because clouds are so voluble and light, that every breath of wind changes the position of those ves’cicles or bubbles.
Q.How canwinds changetheshapeofcloudsby altering the position of their parts?
Q.How canwinds changetheshapeofcloudsby altering the position of their parts?
A. Because clouds are so voluble and light, that every breath of wind changes the position of those ves’cicles or bubbles.
A. Because clouds are so voluble and light, that every breath of wind changes the position of those ves’cicles or bubbles.
Q.What are the generalcoloursof theclouds?A. White and grey,when the sun is above the horizon: but red, orange, and yellow,at sun-rise and sun-set.Theblue skycannot be considered ascloudsat all.
Q.What are the generalcoloursof theclouds?
Q.What are the generalcoloursof theclouds?
A. White and grey,when the sun is above the horizon: but red, orange, and yellow,at sun-rise and sun-set.Theblue skycannot be considered ascloudsat all.
A. White and grey,when the sun is above the horizon: but red, orange, and yellow,at sun-rise and sun-set.
Theblue skycannot be considered ascloudsat all.
Q.Why are thelast cloudsofeveninggenerally of aredtinge?A. Becauseredrays are theleast refrangible of all; and, therefore,are the last to disappear.
Q.Why are thelast cloudsofeveninggenerally of aredtinge?
Q.Why are thelast cloudsofeveninggenerally of aredtinge?
A. Becauseredrays are theleast refrangible of all; and, therefore,are the last to disappear.
A. Becauseredrays are theleast refrangible of all; and, therefore,are the last to disappear.
Q.What is meant by being “less refrangible”?A. Beingless able to be bent. Blue and green rays being very easily bent (by the resistance of the air) are thrownoff from the horizon; but red rays not beingbent backin the same way, give a tinge to the evening clouds.
Q.What is meant by being “less refrangible”?
Q.What is meant by being “less refrangible”?
A. Beingless able to be bent. Blue and green rays being very easily bent (by the resistance of the air) are thrownoff from the horizon; but red rays not beingbent backin the same way, give a tinge to the evening clouds.
A. Beingless able to be bent. Blue and green rays being very easily bent (by the resistance of the air) are thrownoff from the horizon; but red rays not beingbent backin the same way, give a tinge to the evening clouds.
Q.Why aremorning cloudsgenerally of aredtinge?A. Because red rays are theleast refrangible of all, and not beingbent back by the air(like blue and green),strike upon the horizon, and give a tinge to the morning clouds.
Q.Why aremorning cloudsgenerally of aredtinge?
Q.Why aremorning cloudsgenerally of aredtinge?
A. Because red rays are theleast refrangible of all, and not beingbent back by the air(like blue and green),strike upon the horizon, and give a tinge to the morning clouds.
A. Because red rays are theleast refrangible of all, and not beingbent back by the air(like blue and green),strike upon the horizon, and give a tinge to the morning clouds.
Q.Why is not the reflection of clouds alwaysalike?A. Because theirsize, density, and situation in regard to the sun, vary perpetually; so that sometimesonecolour is reflected, and sometimesanother.
Q.Why is not the reflection of clouds alwaysalike?
Q.Why is not the reflection of clouds alwaysalike?
A. Because theirsize, density, and situation in regard to the sun, vary perpetually; so that sometimesonecolour is reflected, and sometimesanother.
A. Because theirsize, density, and situation in regard to the sun, vary perpetually; so that sometimesonecolour is reflected, and sometimesanother.
Q.What regulates themotionof theclouds?A. Themotion of the cloudsis generally directed by thewinds; but sometimeselectricitywill influence their motion also.
Q.What regulates themotionof theclouds?
Q.What regulates themotionof theclouds?
A. Themotion of the cloudsis generally directed by thewinds; but sometimeselectricitywill influence their motion also.
A. Themotion of the cloudsis generally directed by thewinds; but sometimeselectricitywill influence their motion also.
Q.How do you know thatcloudsmove byotherinfluences besideswind?A. Because we often see in calm weathersmall clouds meeting each otherfrom opposite directions.
Q.How do you know thatcloudsmove byotherinfluences besideswind?
Q.How do you know thatcloudsmove byotherinfluences besideswind?
A. Because we often see in calm weathersmall clouds meeting each otherfrom opposite directions.
A. Because we often see in calm weathersmall clouds meeting each otherfrom opposite directions.
Q.How do you know thatelectricityaffects the motion of the clouds?A. Because clouds often meet fromopposite directions; and (after they havedischarged their opposite electricities into each other)vanish altogether.
Q.How do you know thatelectricityaffects the motion of the clouds?
Q.How do you know thatelectricityaffects the motion of the clouds?
A. Because clouds often meet fromopposite directions; and (after they havedischarged their opposite electricities into each other)vanish altogether.
A. Because clouds often meet fromopposite directions; and (after they havedischarged their opposite electricities into each other)vanish altogether.
Q.Into how manyclassesare the different sorts ofcloudsgenerally divided?A. Into three classes:—viz. Simple, Intermediate, and Compound.
Q.Into how manyclassesare the different sorts ofcloudsgenerally divided?
Q.Into how manyclassesare the different sorts ofcloudsgenerally divided?
A. Into three classes:—viz. Simple, Intermediate, and Compound.
A. Into three classes:—viz. Simple, Intermediate, and Compound.
Q.How aresimple cloudssub-divided?A. 1.—Cirrus. 2.—Cum’ulus; and 3.—Stra’tus.
Q.How aresimple cloudssub-divided?
Q.How aresimple cloudssub-divided?
A. 1.—Cirrus. 2.—Cum’ulus; and 3.—Stra’tus.
A. 1.—Cirrus. 2.—Cum’ulus; and 3.—Stra’tus.
Q.What arecirrus clouds?A. Clouds likefibres,loose hair, orthin streaks, are called cirrus clouds.
Q.What arecirrus clouds?
Q.What arecirrus clouds?
A. Clouds likefibres,loose hair, orthin streaks, are called cirrus clouds.
A. Clouds likefibres,loose hair, orthin streaks, are called cirrus clouds.
Q.Why are these clouds calledcirrus?A. From the Latin word,cirrus(“a lock of hair, or curl”): they are the mostelevated of all clouds.
Q.Why are these clouds calledcirrus?
Q.Why are these clouds calledcirrus?
A. From the Latin word,cirrus(“a lock of hair, or curl”): they are the mostelevated of all clouds.
A. From the Latin word,cirrus(“a lock of hair, or curl”): they are the mostelevated of all clouds.
Q.What docirruscloudsportend?A. When the streamers pointupwards, the clouds arefalling, andrain is at hand: but when the streamers pointdownwards, expect easterly wind or drought.
Q.What docirruscloudsportend?
Q.What docirruscloudsportend?
A. When the streamers pointupwards, the clouds arefalling, andrain is at hand: but when the streamers pointdownwards, expect easterly wind or drought.
A. When the streamers pointupwards, the clouds arefalling, andrain is at hand: but when the streamers pointdownwards, expect easterly wind or drought.
Q.What arecum’ulus clouds?A. Cum’ulus clouds are lumps like greatsugar-loaves,—volumes of smoke,—ormountain towering over mountain.
Q.What arecum’ulus clouds?
Q.What arecum’ulus clouds?
A. Cum’ulus clouds are lumps like greatsugar-loaves,—volumes of smoke,—ormountain towering over mountain.
A. Cum’ulus clouds are lumps like greatsugar-loaves,—volumes of smoke,—ormountain towering over mountain.
Q.Why are these monster masses calledcum’ulus clouds?A. From the Latin word,cum’ulus(a mass or pile).
Q.Why are these monster masses calledcum’ulus clouds?
Q.Why are these monster masses calledcum’ulus clouds?
A. From the Latin word,cum’ulus(a mass or pile).
A. From the Latin word,cum’ulus(a mass or pile).
Q.What docum’uluscloudsforeshow?A. When these piles of cloud arefleecy, and sailagainst the wind, they indicaterain; but when their outline is veryhard, and they come upwith the wind, they foretellfine weather.Cumulus clouds should besmallertowards evening than they are at noon. If theyincreasein size at sun-set, a thunder-storm may be expected in the night.
Q.What docum’uluscloudsforeshow?
Q.What docum’uluscloudsforeshow?
A. When these piles of cloud arefleecy, and sailagainst the wind, they indicaterain; but when their outline is veryhard, and they come upwith the wind, they foretellfine weather.Cumulus clouds should besmallertowards evening than they are at noon. If theyincreasein size at sun-set, a thunder-storm may be expected in the night.
A. When these piles of cloud arefleecy, and sailagainst the wind, they indicaterain; but when their outline is veryhard, and they come upwith the wind, they foretellfine weather.
Cumulus clouds should besmallertowards evening than they are at noon. If theyincreasein size at sun-set, a thunder-storm may be expected in the night.
Q.What arestra’tus clouds?A. Creeping mists, especially prevalent in a summer’s evening: these clouds rise at sun-setin low damp places, and are alwaysnearer the earth, than anyothersort of cloud.
Q.What arestra’tus clouds?
Q.What arestra’tus clouds?
A. Creeping mists, especially prevalent in a summer’s evening: these clouds rise at sun-setin low damp places, and are alwaysnearer the earth, than anyothersort of cloud.
A. Creeping mists, especially prevalent in a summer’s evening: these clouds rise at sun-setin low damp places, and are alwaysnearer the earth, than anyothersort of cloud.
Q.Why are these mists calledstra’tusclouds?A. From the Latin word,stra’tus(“laid low,” or “that which lies low”).
Q.Why are these mists calledstra’tusclouds?
Q.Why are these mists calledstra’tusclouds?
A. From the Latin word,stra’tus(“laid low,” or “that which lies low”).
A. From the Latin word,stra’tus(“laid low,” or “that which lies low”).
Q.How are theintermediate cloudssub-divided?A. Into two sorts. 1.—The Cirro-Cum’ulus; and 2.—The Cirro-Stra’tus.
Q.How are theintermediate cloudssub-divided?
Q.How are theintermediate cloudssub-divided?
A. Into two sorts. 1.—The Cirro-Cum’ulus; and 2.—The Cirro-Stra’tus.
A. Into two sorts. 1.—The Cirro-Cum’ulus; and 2.—The Cirro-Stra’tus.
Q.What arecirro-cum’ulus clouds?A. Whencirrusclouds spring from amassy centre; or whenheavy masses of cloudterminate at their edges inlong streaks, or what are called “mares’ tails.”A system of small round clouds may be called cirro-cum’ulus.
Q.What arecirro-cum’ulus clouds?
Q.What arecirro-cum’ulus clouds?
A. Whencirrusclouds spring from amassy centre; or whenheavy masses of cloudterminate at their edges inlong streaks, or what are called “mares’ tails.”
A. Whencirrusclouds spring from amassy centre; or whenheavy masses of cloudterminate at their edges inlong streaks, or what are called “mares’ tails.”
A system of small round clouds may be called cirro-cum’ulus.
A system of small round clouds may be called cirro-cum’ulus.
Q.What docirro-cum’ulusclouds generallyforebode?A. Continued drought, or hot dry weather.
Q.What docirro-cum’ulusclouds generallyforebode?
Q.What docirro-cum’ulusclouds generallyforebode?
A. Continued drought, or hot dry weather.
A. Continued drought, or hot dry weather.
Q.What arecirro-stra’tus clouds?A. They compose what is generally called a “mackarel sky.” This class of clouds always indicaterain and wind; hence the proverb—“Mackarels’ scales and mares’ tailsMake lofty ships to carry low sails.”
Q.What arecirro-stra’tus clouds?
Q.What arecirro-stra’tus clouds?
A. They compose what is generally called a “mackarel sky.” This class of clouds always indicaterain and wind; hence the proverb—“Mackarels’ scales and mares’ tailsMake lofty ships to carry low sails.”
A. They compose what is generally called a “mackarel sky.” This class of clouds always indicaterain and wind; hence the proverb—
“Mackarels’ scales and mares’ tailsMake lofty ships to carry low sails.”
“Mackarels’ scales and mares’ tailsMake lofty ships to carry low sails.”
“Mackarels’ scales and mares’ tails
Make lofty ships to carry low sails.”
Q.How arecompound cloudssub-divided?A. Compound clouds are also sub-divided into two sorts. 1.—The Cum’ulo-stra’tus; and 2.—The Nimbus.
Q.How arecompound cloudssub-divided?
Q.How arecompound cloudssub-divided?
A. Compound clouds are also sub-divided into two sorts. 1.—The Cum’ulo-stra’tus; and 2.—The Nimbus.
A. Compound clouds are also sub-divided into two sorts. 1.—The Cum’ulo-stra’tus; and 2.—The Nimbus.
Q.What is meant bycum’ulo-stra’tusclouds?A. Those clouds which assume allsorts ofgigantic fancy forms; such as vast towers and rocks,—huge whales and dragons,—scenes of battle,—and cloudy giants. This class of clouds is the most romantic and strange of all.
Q.What is meant bycum’ulo-stra’tusclouds?
Q.What is meant bycum’ulo-stra’tusclouds?
A. Those clouds which assume allsorts ofgigantic fancy forms; such as vast towers and rocks,—huge whales and dragons,—scenes of battle,—and cloudy giants. This class of clouds is the most romantic and strange of all.
A. Those clouds which assume allsorts ofgigantic fancy forms; such as vast towers and rocks,—huge whales and dragons,—scenes of battle,—and cloudy giants. This class of clouds is the most romantic and strange of all.
Q.What do the cumulo-stratus clouds foretell?A.A change of weather; either from fine to rain, or from rain to fine weather.
Q.What do the cumulo-stratus clouds foretell?
Q.What do the cumulo-stratus clouds foretell?
A.A change of weather; either from fine to rain, or from rain to fine weather.
A.A change of weather; either from fine to rain, or from rain to fine weather.
Q.What arenimbus clouds?A. Nimbus is the Latin word for “clouds which bring a storm;” and all clouds from whichrain fallsare so named.
Q.What arenimbus clouds?
Q.What arenimbus clouds?
A. Nimbus is the Latin word for “clouds which bring a storm;” and all clouds from whichrain fallsare so named.
A. Nimbus is the Latin word for “clouds which bring a storm;” and all clouds from whichrain fallsare so named.
Q.Whatappearancetakes place in thecloudsat the approach ofrain?A. Thecum’uluscloud becomesstationary, andcirrus streaks settle upon it, forming cumulo-stratus clouds; which areblackat first, but afterwards of agreycolour.
Q.Whatappearancetakes place in thecloudsat the approach ofrain?
Q.Whatappearancetakes place in thecloudsat the approach ofrain?
A. Thecum’uluscloud becomesstationary, andcirrus streaks settle upon it, forming cumulo-stratus clouds; which areblackat first, but afterwards of agreycolour.
A. Thecum’uluscloud becomesstationary, andcirrus streaks settle upon it, forming cumulo-stratus clouds; which areblackat first, but afterwards of agreycolour.
Q.Why docloudsgatherround mountain-tops?A. Because (as they float along)they dash against the mountains; and (beingarrestedin their motion) collect round the top.
Q.Why docloudsgatherround mountain-tops?
Q.Why docloudsgatherround mountain-tops?
A. Because (as they float along)they dash against the mountains; and (beingarrestedin their motion) collect round the top.
A. Because (as they float along)they dash against the mountains; and (beingarrestedin their motion) collect round the top.
Q.What is theuseofclouds?A. 1st—They act as screens to arrestthe radiation of heat from the earth:2ndly—They temper the heat of thesun’s rays: and3rdly—They are the greatstore-houses of rain.
Q.What is theuseofclouds?
Q.What is theuseofclouds?
A. 1st—They act as screens to arrestthe radiation of heat from the earth:2ndly—They temper the heat of thesun’s rays: and3rdly—They are the greatstore-houses of rain.
A. 1st—They act as screens to arrestthe radiation of heat from the earth:
2ndly—They temper the heat of thesun’s rays: and
3rdly—They are the greatstore-houses of rain.
Q.Why iswindsaid toblow uptheclouds?A. When adrywind travels over sea, and accumulatesmorevapour than the air cansustain, itrelinquishes a part(as it flies along) in the form of clouds.
Q.Why iswindsaid toblow uptheclouds?
Q.Why iswindsaid toblow uptheclouds?
A. When adrywind travels over sea, and accumulatesmorevapour than the air cansustain, itrelinquishes a part(as it flies along) in the form of clouds.
A. When adrywind travels over sea, and accumulatesmorevapour than the air cansustain, itrelinquishes a part(as it flies along) in the form of clouds.
Q.Why doeswindsometimesdrive awaytheclouds?A. When wind travels overdry climesorthirsty deserts, it becomesso dry itself, that it absorbs vapour from the clouds, anddispersesthem.
Q.Why doeswindsometimesdrive awaytheclouds?
Q.Why doeswindsometimesdrive awaytheclouds?
A. When wind travels overdry climesorthirsty deserts, it becomesso dry itself, that it absorbs vapour from the clouds, anddispersesthem.
A. When wind travels overdry climesorthirsty deserts, it becomesso dry itself, that it absorbs vapour from the clouds, anddispersesthem.
Q.What is thecauseof ared sun-set?A. Because the vapour of the air is notactually condensed into clouds, but only on thepoint of being condensed; in which state it bends thered rays of the sun towards the horizon, where they are reflected at sun-set.
Q.What is thecauseof ared sun-set?
Q.What is thecauseof ared sun-set?
A. Because the vapour of the air is notactually condensed into clouds, but only on thepoint of being condensed; in which state it bends thered rays of the sun towards the horizon, where they are reflected at sun-set.
A. Because the vapour of the air is notactually condensed into clouds, but only on thepoint of being condensed; in which state it bends thered rays of the sun towards the horizon, where they are reflected at sun-set.
Q.Why is ared sun-setan indication of afine dayto-morrow?A. Because (notwithstanding the cold of sun-set) the vapours of the earth arenot condensed into clouds. Our Lord referred to this prognostic in the following words: “When it is evening ye say, it will be fair weather, for the sky is red.” (Matt. xvi. 2.)
Q.Why is ared sun-setan indication of afine dayto-morrow?
Q.Why is ared sun-setan indication of afine dayto-morrow?
A. Because (notwithstanding the cold of sun-set) the vapours of the earth arenot condensed into clouds. Our Lord referred to this prognostic in the following words: “When it is evening ye say, it will be fair weather, for the sky is red.” (Matt. xvi. 2.)
A. Because (notwithstanding the cold of sun-set) the vapours of the earth arenot condensed into clouds. Our Lord referred to this prognostic in the following words: “When it is evening ye say, it will be fair weather, for the sky is red.” (Matt. xvi. 2.)
Q.What is the cause of a copperyyellow sun-set?A. Because the vapour of the air isactually condensed into clouds; in which case it “refracts” (or bends) theyellow rays of the sun towards the horizon, where they are reflected at sun-set.
Q.What is the cause of a copperyyellow sun-set?
Q.What is the cause of a copperyyellow sun-set?
A. Because the vapour of the air isactually condensed into clouds; in which case it “refracts” (or bends) theyellow rays of the sun towards the horizon, where they are reflected at sun-set.
A. Because the vapour of the air isactually condensed into clouds; in which case it “refracts” (or bends) theyellow rays of the sun towards the horizon, where they are reflected at sun-set.
Q.Why is ayellow sunsetan indication ofwet?A. Because the vapours of the airare already condensed into clouds; rain, therefore, may be shortly expected.
Q.Why is ayellow sunsetan indication ofwet?
Q.Why is ayellow sunsetan indication ofwet?
A. Because the vapours of the airare already condensed into clouds; rain, therefore, may be shortly expected.
A. Because the vapours of the airare already condensed into clouds; rain, therefore, may be shortly expected.
Q.What is the cause of ared sun-rise?A. Vapour in the upper region of the airjust on the point of being condensed.
Q.What is the cause of ared sun-rise?
Q.What is the cause of ared sun-rise?
A. Vapour in the upper region of the airjust on the point of being condensed.
A. Vapour in the upper region of the airjust on the point of being condensed.
Q.Why is aredandloweringsky atsunrisean indication of awet day?A. Because the higher regions of the air areladen with vapour, on the verypoint of condensation, which the rising sun cannot disperse. Hence our Lord’s observation, “In the morning (ye say) it will be foul weather to-day, for the sky is red and lowering.” (Matt. xvi. 3.)
Q.Why is aredandloweringsky atsunrisean indication of awet day?
Q.Why is aredandloweringsky atsunrisean indication of awet day?
A. Because the higher regions of the air areladen with vapour, on the verypoint of condensation, which the rising sun cannot disperse. Hence our Lord’s observation, “In the morning (ye say) it will be foul weather to-day, for the sky is red and lowering.” (Matt. xvi. 3.)
A. Because the higher regions of the air areladen with vapour, on the verypoint of condensation, which the rising sun cannot disperse. Hence our Lord’s observation, “In the morning (ye say) it will be foul weather to-day, for the sky is red and lowering.” (Matt. xvi. 3.)
Q.Why is agrey morningan indication of afine day?A. Becausethatair alonecontiguous to the earthis damp and full of vapour. There are no vapours in thehigherregions of the airto reflect red rays; and hence the morning-light looks grey.
Q.Why is agrey morningan indication of afine day?
Q.Why is agrey morningan indication of afine day?
A. Becausethatair alonecontiguous to the earthis damp and full of vapour. There are no vapours in thehigherregions of the airto reflect red rays; and hence the morning-light looks grey.
A. Becausethatair alonecontiguous to the earthis damp and full of vapour. There are no vapours in thehigherregions of the airto reflect red rays; and hence the morning-light looks grey.
Q.What difference (in the state of the air) is required, to make agreyandred sunrise?A. In agreysunrise, only that portion of aircontiguous to the earth is filled with vapour; all the rest is clear and dry. But in aredsunrise the air in theupper regionsis so full of vapour that the rising sun cannot disperse it.
Q.What difference (in the state of the air) is required, to make agreyandred sunrise?
Q.What difference (in the state of the air) is required, to make agreyandred sunrise?
A. In agreysunrise, only that portion of aircontiguous to the earth is filled with vapour; all the rest is clear and dry. But in aredsunrise the air in theupper regionsis so full of vapour that the rising sun cannot disperse it.
A. In agreysunrise, only that portion of aircontiguous to the earth is filled with vapour; all the rest is clear and dry. But in aredsunrise the air in theupper regionsis so full of vapour that the rising sun cannot disperse it.
Q.Why is agrey sunsetan indication ofwet?A. If the air on thesurface of the earthbe verydamp at sunset, it is aproof that the air issaturated with vapour, and wet may be expected: hence the proverb—“Evening red and morning greyWill set the traveller on his way;But evening grey and morning redWill bring down rain upon his head.”
Q.Why is agrey sunsetan indication ofwet?
Q.Why is agrey sunsetan indication ofwet?
A. If the air on thesurface of the earthbe verydamp at sunset, it is aproof that the air issaturated with vapour, and wet may be expected: hence the proverb—“Evening red and morning greyWill set the traveller on his way;But evening grey and morning redWill bring down rain upon his head.”
A. If the air on thesurface of the earthbe verydamp at sunset, it is aproof that the air issaturated with vapour, and wet may be expected: hence the proverb—
“Evening red and morning greyWill set the traveller on his way;But evening grey and morning redWill bring down rain upon his head.”
“Evening red and morning greyWill set the traveller on his way;But evening grey and morning redWill bring down rain upon his head.”
“Evening red and morning grey
Will set the traveller on his way;
But evening grey and morning red
Will bring down rain upon his head.”
Q.The proverb says, “Arainbowin themorningis the shepherd’swarning:” why is it so?A. A rainbow can only be formedwhen the clouds(containing or dropping rain)are opposite the sun: amorningrainbow, therefore, isalways in the west, and indicates that bad weather ison the road to us.
Q.The proverb says, “Arainbowin themorningis the shepherd’swarning:” why is it so?
Q.The proverb says, “Arainbowin themorningis the shepherd’swarning:” why is it so?
A. A rainbow can only be formedwhen the clouds(containing or dropping rain)are opposite the sun: amorningrainbow, therefore, isalways in the west, and indicates that bad weather ison the road to us.
A. A rainbow can only be formedwhen the clouds(containing or dropping rain)are opposite the sun: amorningrainbow, therefore, isalways in the west, and indicates that bad weather ison the road to us.
Q.Why does arainbowin thewestindicate thatbad weatheris on the road to us?A. Because our heavy rains are usuallybrought by west or south-west winds; and, therefore, clouds which reflect the colour of the rainbowin the west, are coming upwith the wind, bringing rain with them.
Q.Why does arainbowin thewestindicate thatbad weatheris on the road to us?
Q.Why does arainbowin thewestindicate thatbad weatheris on the road to us?
A. Because our heavy rains are usuallybrought by west or south-west winds; and, therefore, clouds which reflect the colour of the rainbowin the west, are coming upwith the wind, bringing rain with them.
A. Because our heavy rains are usuallybrought by west or south-west winds; and, therefore, clouds which reflect the colour of the rainbowin the west, are coming upwith the wind, bringing rain with them.
Q.The proverb says, “Arainbowatnight, is the shepherd’sdelight;” why is it so?A. As a rainbow is alwaysopposite tothe sun, therefore a rainbow atnightis in theeast, and indicates that bad weather isleaving us.
Q.The proverb says, “Arainbowatnight, is the shepherd’sdelight;” why is it so?
Q.The proverb says, “Arainbowatnight, is the shepherd’sdelight;” why is it so?
A. As a rainbow is alwaysopposite tothe sun, therefore a rainbow atnightis in theeast, and indicates that bad weather isleaving us.
A. As a rainbow is alwaysopposite tothe sun, therefore a rainbow atnightis in theeast, and indicates that bad weather isleaving us.
Q.Why does arainbowin theeastindicate that bad weather isleavingus?A. Aswestandsouth-westwinds bringrain, if the clouds have been drivenfrom the west to the east, they have passedover us, and are goingaway from us.
Q.Why does arainbowin theeastindicate that bad weather isleavingus?
Q.Why does arainbowin theeastindicate that bad weather isleavingus?
A. Aswestandsouth-westwinds bringrain, if the clouds have been drivenfrom the west to the east, they have passedover us, and are goingaway from us.
A. Aswestandsouth-westwinds bringrain, if the clouds have been drivenfrom the west to the east, they have passedover us, and are goingaway from us.
Q.What is meant by anaurora borea’lis, or northern light?A. Aluminous white cloudin thenorth of the skyat night-time. Sometimes streaks of blue, purple, and red,—and sometimes flashes of light, are seen also.In our island this phenomenon generally rises from a dark cloud (running from the north to the east and west) elevated about 10 or 20 degrees above the horizon: above this dark bed of clouds the luminous white light appears.
Q.What is meant by anaurora borea’lis, or northern light?
Q.What is meant by anaurora borea’lis, or northern light?
A. Aluminous white cloudin thenorth of the skyat night-time. Sometimes streaks of blue, purple, and red,—and sometimes flashes of light, are seen also.In our island this phenomenon generally rises from a dark cloud (running from the north to the east and west) elevated about 10 or 20 degrees above the horizon: above this dark bed of clouds the luminous white light appears.
A. Aluminous white cloudin thenorth of the skyat night-time. Sometimes streaks of blue, purple, and red,—and sometimes flashes of light, are seen also.
In our island this phenomenon generally rises from a dark cloud (running from the north to the east and west) elevated about 10 or 20 degrees above the horizon: above this dark bed of clouds the luminous white light appears.
Q.What is thecauseof theaurora borealis, or northern light?A.Electricityin the clouds.
Q.What is thecauseof theaurora borealis, or northern light?
Q.What is thecauseof theaurora borealis, or northern light?
A.Electricityin the clouds.
A.Electricityin the clouds.
Q.Why is theaurora borealisgenerally awhitelight?A. Because the electric fluid passesthrough airextremely rarefied: and whenever electric fluid passes throughair much rarefied, it always produces awhite light.
Q.Why is theaurora borealisgenerally awhitelight?
Q.Why is theaurora borealisgenerally awhitelight?
A. Because the electric fluid passesthrough airextremely rarefied: and whenever electric fluid passes throughair much rarefied, it always produces awhite light.
A. Because the electric fluid passesthrough airextremely rarefied: and whenever electric fluid passes throughair much rarefied, it always produces awhite light.
Q.Why are there sometimesdifferent coloursin the aurora borealis, such as yellow, red, and purple?A. Because the electric fluid passes throughair of different densities. The mostrarefied airproduces awhite light; the mostdry air, red; and the mostdampproducesyellowstreaks.
Q.Why are there sometimesdifferent coloursin the aurora borealis, such as yellow, red, and purple?
Q.Why are there sometimesdifferent coloursin the aurora borealis, such as yellow, red, and purple?
A. Because the electric fluid passes throughair of different densities. The mostrarefied airproduces awhite light; the mostdry air, red; and the mostdampproducesyellowstreaks.
A. Because the electric fluid passes throughair of different densities. The mostrarefied airproduces awhite light; the mostdry air, red; and the mostdampproducesyellowstreaks.
Q.Does theaurora borealisforbode fine weather orwet?A. When itscorruscations are very bright, it is generally followed by stormy moist unsettled weather.
Q.Does theaurora borealisforbode fine weather orwet?
Q.Does theaurora borealisforbode fine weather orwet?
A. When itscorruscations are very bright, it is generally followed by stormy moist unsettled weather.
A. When itscorruscations are very bright, it is generally followed by stormy moist unsettled weather.
Q.Why does ahazeround thesunindicaterain?A. Because thehazeis caused byvery fine rain falling in the upper regions of the air; when this is the case, arainof 5or6hours continuance, may be expected.
Q.Why does ahazeround thesunindicaterain?
Q.Why does ahazeround thesunindicaterain?
A. Because thehazeis caused byvery fine rain falling in the upper regions of the air; when this is the case, arainof 5or6hours continuance, may be expected.
A. Because thehazeis caused byvery fine rain falling in the upper regions of the air; when this is the case, arainof 5or6hours continuance, may be expected.
Q.Why is ahaloround themoona sure indication ofrain?A. Because the halo is caused byfine rain falling in the upper regions of the air. Thelargerthe halo thenearer the rain-clouds, and the sooner may rain be expected.
Q.Why is ahaloround themoona sure indication ofrain?
Q.Why is ahaloround themoona sure indication ofrain?
A. Because the halo is caused byfine rain falling in the upper regions of the air. Thelargerthe halo thenearer the rain-clouds, and the sooner may rain be expected.
A. Because the halo is caused byfine rain falling in the upper regions of the air. Thelargerthe halo thenearer the rain-clouds, and the sooner may rain be expected.
Q.Why does ablack mistbringwetweather?A. The mist isblack, because it isovershadowed by dense cloudsor masses of vapour; and, therefore, it forebodes wet.
Q.Why does ablack mistbringwetweather?
Q.Why does ablack mistbringwetweather?
A. The mist isblack, because it isovershadowed by dense cloudsor masses of vapour; and, therefore, it forebodes wet.
A. The mist isblack, because it isovershadowed by dense cloudsor masses of vapour; and, therefore, it forebodes wet.
Q.Why does awhite mistindicatefineweather?A. The mist iswhite, becauseno clouds blacken it with their shadow; and (as the sky is cloudless)fine weathermay be expected.
Q.Why does awhite mistindicatefineweather?
Q.Why does awhite mistindicatefineweather?
A. The mist iswhite, becauseno clouds blacken it with their shadow; and (as the sky is cloudless)fine weathermay be expected.
A. The mist iswhite, becauseno clouds blacken it with their shadow; and (as the sky is cloudless)fine weathermay be expected.
Q.Why do wefeelalmostsuffocatedin a hot cloudy night?A. Because the heat of the earth (being unable to escape into the upper region of the air, in consequence of the clouds)floats, like a sea of heat,on the surface of the earth.
Q.Why do wefeelalmostsuffocatedin a hot cloudy night?
Q.Why do wefeelalmostsuffocatedin a hot cloudy night?
A. Because the heat of the earth (being unable to escape into the upper region of the air, in consequence of the clouds)floats, like a sea of heat,on the surface of the earth.
A. Because the heat of the earth (being unable to escape into the upper region of the air, in consequence of the clouds)floats, like a sea of heat,on the surface of the earth.
Q.Why do we feel moresprightlyin a clear bright night?A. Because the heat of the earth can readily escape into the upper regions of the air, and is not confined andpent-in by thick clouds.
Q.Why do we feel moresprightlyin a clear bright night?
Q.Why do we feel moresprightlyin a clear bright night?
A. Because the heat of the earth can readily escape into the upper regions of the air, and is not confined andpent-in by thick clouds.
A. Because the heat of the earth can readily escape into the upper regions of the air, and is not confined andpent-in by thick clouds.
Q.Why do wefeel depressedinspiritson awetmurkyday?A. 1st—Because when the air is laden with vapour,it has less oxygen.2ndly—The air being lighter than usual,does not balance the air in our body: and3rdly—Moist air has a tendency to relax the nervous system.
Q.Why do wefeel depressedinspiritson awetmurkyday?
Q.Why do wefeel depressedinspiritson awetmurkyday?
A. 1st—Because when the air is laden with vapour,it has less oxygen.2ndly—The air being lighter than usual,does not balance the air in our body: and3rdly—Moist air has a tendency to relax the nervous system.
A. 1st—Because when the air is laden with vapour,it has less oxygen.
2ndly—The air being lighter than usual,does not balance the air in our body: and
3rdly—Moist air has a tendency to relax the nervous system.
Q.What is meant by the “air balancing the air” in our body?A. The human body is filled with air of the same density as that around: if, therefore, we ascend intopurer air, or descend intodenser air, the balance is destroyed, andwe feel oppressed and suffocated.
Q.What is meant by the “air balancing the air” in our body?
Q.What is meant by the “air balancing the air” in our body?
A. The human body is filled with air of the same density as that around: if, therefore, we ascend intopurer air, or descend intodenser air, the balance is destroyed, andwe feel oppressed and suffocated.
A. The human body is filled with air of the same density as that around: if, therefore, we ascend intopurer air, or descend intodenser air, the balance is destroyed, andwe feel oppressed and suffocated.
Q.Why do we feeloppressedandsuffocatedif the air around is not of thesame densityas that in our body?A. If the air around be more dense, it willsqueeze our body inby its weight:if it belessdense, the air in our body willblow us out.
Q.Why do we feeloppressedandsuffocatedif the air around is not of thesame densityas that in our body?
Q.Why do we feeloppressedandsuffocatedif the air around is not of thesame densityas that in our body?
A. If the air around be more dense, it willsqueeze our body inby its weight:if it belessdense, the air in our body willblow us out.
A. If the air around be more dense, it willsqueeze our body inby its weight:if it belessdense, the air in our body willblow us out.
Q.Why dopersonswhoascendinballoons feel painin their eyes, ears and chest?A. Because the air in the upper regions ismore rarethan theair in their bodies; and (till theequilibrium is restored) great pain is felt in all the more sensitive parts of the body.
Q.Why dopersonswhoascendinballoons feel painin their eyes, ears and chest?
Q.Why dopersonswhoascendinballoons feel painin their eyes, ears and chest?
A. Because the air in the upper regions ismore rarethan theair in their bodies; and (till theequilibrium is restored) great pain is felt in all the more sensitive parts of the body.
A. Because the air in the upper regions ismore rarethan theair in their bodies; and (till theequilibrium is restored) great pain is felt in all the more sensitive parts of the body.
Q.Why dopersonswhodescendindiving-bells feel painin their eyes, ears and chest?A. Because the air in the sea ismore densethan the air in their bodies; and (till theequilibrium is restored) great pain is felt in all the more sensitive parts of the body.
Q.Why dopersonswhodescendindiving-bells feel painin their eyes, ears and chest?
Q.Why dopersonswhodescendindiving-bells feel painin their eyes, ears and chest?
A. Because the air in the sea ismore densethan the air in their bodies; and (till theequilibrium is restored) great pain is felt in all the more sensitive parts of the body.
A. Because the air in the sea ismore densethan the air in their bodies; and (till theequilibrium is restored) great pain is felt in all the more sensitive parts of the body.
Q.Why does thesea heaveandsighjustpreviousto astorm?A. The density of the air (just previous to a storm) isvery suddenly diminished, but the air in the sea isnot so quickly affected; therefore the sea heaves and sighsin its effort to restore an equilibrium.
Q.Why does thesea heaveandsighjustpreviousto astorm?
Q.Why does thesea heaveandsighjustpreviousto astorm?
A. The density of the air (just previous to a storm) isvery suddenly diminished, but the air in the sea isnot so quickly affected; therefore the sea heaves and sighsin its effort to restore an equilibrium.
A. The density of the air (just previous to a storm) isvery suddenly diminished, but the air in the sea isnot so quickly affected; therefore the sea heaves and sighsin its effort to restore an equilibrium.
Q.Why is theairso universallystilljustpreviousto atempest?A. Because the air issuddenly and very greatly rarefied; and (as thedensity of the air is diminished) its powerto transmit sound is diminished also.
Q.Why is theairso universallystilljustpreviousto atempest?
Q.Why is theairso universallystilljustpreviousto atempest?
A. Because the air issuddenly and very greatly rarefied; and (as thedensity of the air is diminished) its powerto transmit sound is diminished also.
A. Because the air issuddenly and very greatly rarefied; and (as thedensity of the air is diminished) its powerto transmit sound is diminished also.
Q.How do youknowthatrarefiedaircannot transmit soundso well as dense air?A. Because thesound of a bell(in the receiver of an air-pump)cannot be heard at all, after the air has been partially exhausted; and a pistolfired on a high mountainwould not sound louder than acommon cracker.
Q.How do youknowthatrarefiedaircannot transmit soundso well as dense air?
Q.How do youknowthatrarefiedaircannot transmit soundso well as dense air?
A. Because thesound of a bell(in the receiver of an air-pump)cannot be heard at all, after the air has been partially exhausted; and a pistolfired on a high mountainwould not sound louder than acommon cracker.
A. Because thesound of a bell(in the receiver of an air-pump)cannot be heard at all, after the air has been partially exhausted; and a pistolfired on a high mountainwould not sound louder than acommon cracker.
Q.Why do wefeel bracedandlight-heartedon afinespring orfrostymorning?A. 1st—Because there ismore oxygenin the air on a fine frosty morning, than there is on a wet day: and2ndly—A brisk and frosty air has a tendency tobracethe nervous system.
Q.Why do wefeel bracedandlight-heartedon afinespring orfrostymorning?
Q.Why do wefeel bracedandlight-heartedon afinespring orfrostymorning?
A. 1st—Because there ismore oxygenin the air on a fine frosty morning, than there is on a wet day: and2ndly—A brisk and frosty air has a tendency tobracethe nervous system.
A. 1st—Because there ismore oxygenin the air on a fine frosty morning, than there is on a wet day: and
2ndly—A brisk and frosty air has a tendency tobracethe nervous system.
Q.Why dodogsandcats(confined to a room) feellazyanddrowsyat the approach of rain?A. 1st—Because the air does not containits full proportion of oxygen: and2ndly—Because the damprelaxes their nervous system, and makes them drowsy.
Q.Why dodogsandcats(confined to a room) feellazyanddrowsyat the approach of rain?
Q.Why dodogsandcats(confined to a room) feellazyanddrowsyat the approach of rain?
A. 1st—Because the air does not containits full proportion of oxygen: and2ndly—Because the damprelaxes their nervous system, and makes them drowsy.
A. 1st—Because the air does not containits full proportion of oxygen: and
2ndly—Because the damprelaxes their nervous system, and makes them drowsy.
Q.Why dohorsesneigh,cattlelow,sheepbleat, andassesbray, at the approach of rain?A. 1st—As the air does not contain its full proportion ofoxygen, they feel adifficulty in breathing: and2ndly—As damprelaxes their nerves, they feel languid and uneasy.
Q.Why dohorsesneigh,cattlelow,sheepbleat, andassesbray, at the approach of rain?
Q.Why dohorsesneigh,cattlelow,sheepbleat, andassesbray, at the approach of rain?
A. 1st—As the air does not contain its full proportion ofoxygen, they feel adifficulty in breathing: and2ndly—As damprelaxes their nerves, they feel languid and uneasy.
A. 1st—As the air does not contain its full proportion ofoxygen, they feel adifficulty in breathing: and
2ndly—As damprelaxes their nerves, they feel languid and uneasy.
Q.Why docandlesandfiresburn with abluer flameinwetweather?A. As the air containsless oxygenin wet weather, theheat of fire is less intense: and the flame is blue,because the fuel is not thoroughly consumed.
Q.Why docandlesandfiresburn with abluer flameinwetweather?
Q.Why docandlesandfiresburn with abluer flameinwetweather?
A. As the air containsless oxygenin wet weather, theheat of fire is less intense: and the flame is blue,because the fuel is not thoroughly consumed.
A. As the air containsless oxygenin wet weather, theheat of fire is less intense: and the flame is blue,because the fuel is not thoroughly consumed.
Q.Why dohills, &c. appearlargerinwetweather?A. Because (when the air isladen with vapour) the rays of light aremore dispersed, and produce a larger reflection; objects, therefore, seen at a distance,appear larger.
Q.Why dohills, &c. appearlargerinwetweather?
Q.Why dohills, &c. appearlargerinwetweather?
A. Because (when the air isladen with vapour) the rays of light aremore dispersed, and produce a larger reflection; objects, therefore, seen at a distance,appear larger.
A. Because (when the air isladen with vapour) the rays of light aremore dispersed, and produce a larger reflection; objects, therefore, seen at a distance,appear larger.
Q.Why dotrees, &c. inwetweather appearfurther offthan they really are?A. Because the fog or mistdiminishes the lightreflected from the object; and as the object becomesmore dim, it seems to befurther off.
Q.Why dotrees, &c. inwetweather appearfurther offthan they really are?
Q.Why dotrees, &c. inwetweather appearfurther offthan they really are?
A. Because the fog or mistdiminishes the lightreflected from the object; and as the object becomesmore dim, it seems to befurther off.
A. Because the fog or mistdiminishes the lightreflected from the object; and as the object becomesmore dim, it seems to befurther off.
Q.Why does thesunseemlargerwhen hesetsandrises, than he does at noon?A. Because the rays pass throughmore of the vapoury atmospherewhich surrounds the earth; and this vapoury atmosphere acts like amagnifying glass.It is very manifest that the lines D C are shorter than the lines E C: if, therefore, A be the earth, and D G E the boundary of the atmosphere round the earth, then the rays M E C (at thehorizon) will pass throughmore of the atmosphere, than the rays S D C, which are more elevated.
Q.Why does thesunseemlargerwhen hesetsandrises, than he does at noon?
Q.Why does thesunseemlargerwhen hesetsandrises, than he does at noon?
A. Because the rays pass throughmore of the vapoury atmospherewhich surrounds the earth; and this vapoury atmosphere acts like amagnifying glass.It is very manifest that the lines D C are shorter than the lines E C: if, therefore, A be the earth, and D G E the boundary of the atmosphere round the earth, then the rays M E C (at thehorizon) will pass throughmore of the atmosphere, than the rays S D C, which are more elevated.
A. Because the rays pass throughmore of the vapoury atmospherewhich surrounds the earth; and this vapoury atmosphere acts like amagnifying glass.
It is very manifest that the lines D C are shorter than the lines E C: if, therefore, A be the earth, and D G E the boundary of the atmosphere round the earth, then the rays M E C (at thehorizon) will pass throughmore of the atmosphere, than the rays S D C, which are more elevated.
It is very manifest that the lines D C are shorter than the lines E C: if, therefore, A be the earth, and D G E the boundary of the atmosphere round the earth, then the rays M E C (at thehorizon) will pass throughmore of the atmosphere, than the rays S D C, which are more elevated.