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Name: judy cochran
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Date: 1999


Question:
What is atmosphere...the second grade needs to know!


Replies:
The atmosphere is a layer of gases which surrounds the entire Earth. It consists mainly of Nitrogen, Oxygen, as well as a few other gaseous elements. The purpose of this "layer" around the Earth is to prevent excessive amounts of radiation from reaching the Earth, thereby allowing we, as animals/planets, to survive. A planet such as Mars has very little, if any, atmosphere and hence has little or no life on it (at least as we see it now). Several million years ago Mars may have supported life. Has your class ever seen pictures of the huge "ancient rivers" or Canyons on Mars. Many scientists these formations could have been made by water, rivers, etc many millions of years ago.

The NASA BBS has .GIF pictures of it if you'd like to see them.

wildman jackson



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