Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Greenfield-Soil

From Rocks to Soil

TermDefinition
Erosion the process of wearing down and carrying away rocks
Weathering the process that breaks down rock and other substances
Mechanical Weathering a type of weathering in which rock is physically broken into smaller pieces
Chemical Weathering the process that breaks down rock through chemical changes
Abrasion the wearing away of rock by rock particles carried by water, ice, wind, or gravity
Frost Wedging water seeps into cracks of rock then freezes, expanding the rock, and then it thaws. Wedges of ice widen and deepen the rock
Oxidation oxygen in air is an important cause of chemical weathering, and iron mixes with oxygen with the presence of water to make rust in a process called this
Permeable a material is full of tiny, connected air spaces that allow water to seep through it
Soil the loose, weathered material on Earth's surface in which plants can grow
Bedrock the solid layer of rock beneath soil
Humus a dark-colored substance that forms as plant and animal remains decay
Fertility a measure of how well the soil supports plant growth
Loam soil that is made up of about equal parts of clay, sand, and silt
pH scale a scale that measures acidity
Soil Horizon a layer of soil that differs in color, texture, and composition from the layers above or below it
Topsoil the A horizon is made up of this, a crumbly, dark brown soil that is a mixture of humus, clay, and other minerals
Subsoil the B horizon, often called this, usually consists of clay and other particles of rock, but little humus
Decomposers the organisms that break the remains of dead organisms into smaller pieces and digest them with chemicals
Created by: pattigreenfield
Popular Earth Science sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards