Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
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

Science Atmosphere

What is the most abundant gas in the atmosphere? Nitrogen
What percent of our atmosphere is Nitrogen? 78%
What percent of our atmosphere is Oxygen? 21
What is the 1st layer of the atmosphere? Troposphere
Where does weather occur? Troposphere
Where do planes fly? Troposphere
What is the 2nd layer of the atmosphere? Stratosphere
Where is the ozone layer located? Stratosphere
What is the 3rd layer of the atmosphere? Mesosphere
What is the coldest layer of the atmosphere? Mesosphere
Where do meteors burn up? Mesosphere
What is the 4th layer of the atmosphere? Thermosphere
Where is the Ionosphere Thermosphere
What is the 5th and final layer of the atmosphere? Exosphere
Created by: OUNation