Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Atmosphere the envelope of gases surrounding the earth or another planet
Troposphere The lowest of the Earth's atmospheric layers
Stratosphere the layer of the earth's atmosphere above the troposphere
Mesosphere the region of the earth's atmosphere above the stratosphere and below the thermosphere
Ionosphere Within the mesosphere and thermosphere is a layer of electrically charged particles
Thermosphere the region of the atmosphere above the mesosphere and below the height at which the atmosphere ceases to have the properties of a continuous medium
Exosphere the outermost region of a planet's atmosphere
CFC'S the chlorine in CFCs causes depletion of atmospheric ozone
Created by: ivega