Welcome to StudyStack, where users create FlashCards and share them with others. Click on the large flashcard to flip it over. Then click the green, red, or yellow box to move the current card to that box. Below the flashcards are blue buttons for other activities that you can try to study the same information.
Test Android StudyStack App
Please help StudyStack get a grant! Vote here.
or...
Reset Password Free Sign Up

Free flashcards for serious fun studying. Create your own or use sets shared by other students and teachers.


incorrect cards (0)
correct cards (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 Correct box, the DOWN ARROW key to move the card to the Incorrect 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!

Correct box contains:
Time elapsed:
Retries:
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

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 on 2008-11-26



bad sites Copyright ©2001-2014  StudyStack LLC   All rights reserved.