The sky is Falling! The sky is Falling!
Most recent answer: 10/22/2007
Q:
what is sky made of?will the sky drop down?
- anug
- anug
A:
Anug -
First question first. Another word for the sky is the Earths atmosphere. The atmosphere is made up of air, which is composed of a number of different gases, the most important of which (at least to us) are nitrogen (78%), oxygen (21%), and carbon dioxide (0.033%). Theres also argon (0.93%), neon (0.0018%), and smaller amounts of helium, krypton, xenon, hydrogen, methane, etc. (From the .) Up high in the atmosphere, just before you reach open space, theres also a layer that contains a lot of ozone (the "ozone layer"), followed by a layer containing a lot of miscellaneous ions (the "ionosphere").
As for the second question, the sky sure will drop down! At least it will continue to do so, since it already has. And its a fortunate thing, too. If the atmosphere wasnt held down near the ground by gravity, the air would just spread out through space and wed have nothing to breathe. Gravity holds the atmosphere against the Earth, but the air is light enough and has enough energy of its own that it doesnt get compressed all the way against the ground under our feet.
-Tamara
First question first. Another word for the sky is the Earths atmosphere. The atmosphere is made up of air, which is composed of a number of different gases, the most important of which (at least to us) are nitrogen (78%), oxygen (21%), and carbon dioxide (0.033%). Theres also argon (0.93%), neon (0.0018%), and smaller amounts of helium, krypton, xenon, hydrogen, methane, etc. (From the .) Up high in the atmosphere, just before you reach open space, theres also a layer that contains a lot of ozone (the "ozone layer"), followed by a layer containing a lot of miscellaneous ions (the "ionosphere").
As for the second question, the sky sure will drop down! At least it will continue to do so, since it already has. And its a fortunate thing, too. If the atmosphere wasnt held down near the ground by gravity, the air would just spread out through space and wed have nothing to breathe. Gravity holds the atmosphere against the Earth, but the air is light enough and has enough energy of its own that it doesnt get compressed all the way against the ground under our feet.
-Tamara
(published on 10/22/2007)