Earth’s Atmosphere

By: Gifty Whitehead

This E-sheet is appropriate for fourth grade students. To begin this E-sheet, click on http://www.ucar.edu/learn/. You should answer the following questions.

Click on introduction to the atmosphere site. (To find this page, you will have to scroll down to end of the page.)

1) What is the earth’s atmosphere?

2) What two gases make up the bulk of the earth’s atmosphere? Give the percentages.

3) What are the four layers of the atmosphere?

4) How is energy transferred between the earth’s surface and atmosphere?

Click back and scroll down to the end of the page, and then click on the greenhouse effect site.

5) What is the greenhouse effect?

6) The earth’s atmosphere contains trace gases, some of which absorb heat. These gases are ________________________.

Click back and scroll down to the end of the page, and then click on the ozone site.

7) The ozone is a form of ____________________.

8) What layer is the ozone found in ________________.

9) Give the other layer in which the ozone layer can be found. This layer can be dangerous to our planet.

Now take a few minutes to look at the pictures, and to read the valuable information given about the earth’s atmosphere.