Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available 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 associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
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

8th Grade Science

Weathering

QuestionAnswer
weathering the natural process by which atmospheric and environmental agents, such as wind, rain, and temperature changes, disintegrate and decompose rocks
physical weathering the mechanical breakdown of rocks into smaller pieces that is caused by natural processes and that does not change the chemical composition of the rock material
release of pressure pressure is released: rock cracks like an egg shell
ice wedging water fills in the cracks of rocks and freezes and pushes a rock apart
animal reasons burrowing: animals digging holes
plant growth plants pushing rocks apart as roots grow
abrasion process by which rock is reduced in size by the scraping action of other rocks driven by water, wind, and gravity
chemical weathering the chemical breakdown and decomposition of rocks by the natural processes in the environment
oxidation chemical reaction in which a material combines with oxygen to form a new material
acid precipitation CO2 + rainwater
sediments small, solid pieces of material from rocks or living things
glacier a large mass of ice that exists year round and moves over land
deposition the process in which material is laid down
delta a mass of material deposited in a triangular or fan shape at the mouth of a river or stream
alluvial fan a fan-shaped mass of material deposited by a stream when the slope of the land decreases sharply
sedimentary rock a rock that forms from compressed or cemented layers of sediment
Created by: SSC