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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

Earth's Surface Ch.2

Uniformitarianism the geologic principle record that the same geologic processes that operate today operated in the past to change Earth's surface
Erosion the process by which water, Ice, wind, or gravity moves weathered particles of rock and soil
Weathering the chemical and physical processes that break down rock and other substances
Mechanical weathering the 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 grinding away of rock by other rock particles carried in water,ice, or wind
frost wedging processes that splits rock when water seeps into cracks, then freezes and expands
oxidation a chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust
Permeable Characteristic of a material that contains connected air spaces, or pores, that water can seep through easily
Soil the loose weathered material on earths surface in which plants can grow
Bedrock rock that makes up earths crust; also the solid rock layer beneath the soil
Humus dark colored organic material in the soil
Fertility a measure of how well soil supports plant growth
Loam rich fertile soil that is made up of about equal parts of clay, sand, and silt
pH Scale range of values used to indicate how acidic or basic a substance is; expresses the concentration of hydrogen ions in a solution
Soil horzion a layer of soil that differs in color and texture from the layers above or below it
Top Soil the crumbly, topmost layer of soil made up of clay an other minerals
Subsoil the layer of soil below topsoil that has less plant and animal matter than topsoil and contains mostly clay and other materials
Decomposer an organism that gets his energy by breaking down wastes and dead organisms , and returns raw materials to the soil and water
natural resource anything naturally occurring in the environment that humans can use
soil conservation the management of soil to limit its destruction
crop rotation the planting of different crops in a field each year to maintain the soil's fertility
contour plowing plowing fields along the curves of a slope to prevent soil loss
conservation plowing soil conservation method in which weeds and dead stalks from the previous year's crop are plowed into the ground
Created by: tjg201064705



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:
restart all cards