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.
Don't know
remaining cards
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:
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


Which materials make up soil? Composed mainly of weathered rock material and organic matter. The three nonliving components of soil are sand, clay, and silt.
What is the scientific name for soil layers? Scientist call each layer a soil horizon, they characterize each by its texture, mineral, composition, color, and depth.
What are the names and characteristics of the three main soil layers? A horizon: Top Soil, B horizon: Sub Soil, and C horizon: Bed Rock
What are the characteristics of the Top Soil? Consists of insoluble minerals and humus.
What are the characteristics of the Sub Soil? Soluble minerals and clay that have been washed down from the surface along with oxide minerals.
What are the characteristics of the Bed Rock Soil? Consists of larger rock fragments and rests on a solid rock layer known as bedrock.
How does soil form? Begins with the process of weathering, which creates sediment, or fine particles of rock. (Through weathering of parent material.)
Why is soil important? Important natural resource for plants, animal, and people. Important for the water cycle. Some types of soil, like clay are important for industry.
What can we do to help maintain the quality of our soils? Crop Rotation, Being careful with the amount and types of fertilizers, pesticides, and herbicides.