Busy. Please wait.
or

Forgot Password?

Don't have an account?  Sign up 
or

taken
show password

why

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)
Save
0:01
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:
Retries:
restart all cards




share
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

Chapter 2

7th grade terms from Earth's Surface book.

QuestionAnswer
What is erosion? movement of rock particles by wind, water, ice, or gravity.
What is weathering? process that breaks down rock and other substances at Earth's surface.
What is mechanical weathering? type of weathering in which rock is physically broken into smaller pieces.
What are examples of mechanical weathering? heating and cooling, abrasion, and freezing and thawing.
What is abrasion? grinding away of rock by rock particles carried by water, ice, wind, and gravity.
What is ice wedging? wedges of ice in rocks widen and deepen the cracks.
What is chemical weathering? process of breaking down rocks through chemical changes.
What are examples of chemical weathering? water, oxygen, carbon dioxide, and acid rain.
What does permeable mean? material is full of tiny, connected air spaces that allows water to seep through.
Why is soil important? everything that lives on land depends directly or indirectly on it.
When did the Dust Bowl take place? the 1930s
Where did the Dust Bowl occur? the Great Plains
What was the Dust Bowl? plowing removed the grass from the Great Plains, exposing the soil. A drought lead to the topsoil drying out, which turned to dust and blew away.
What is soil conservation? managing the soil to prevent its destruction.
What is contour plowing? practice of plowing fields along the curves of a slope.
What is conservation plowing? practice of disturbing the soil as little as possible, leaving dead weeds and stalks to return nutrients to the soil.
Created by: crumsey