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
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

Geology Unit

?

QuestionAnswer
Layers of soil 1.Organic layer 2.Topsoil 3.Subsoil 4.Regolith and Bedrock
Organic Layer sometimes called "litter layer" decomposing organic matter= leaf litter, plant parts,small animals/parts, animal feces
Topsoil the most decomposed organic matter called 'humus' rich in nutrients dark color seeds germinate here lots of organisms: worms, ants, other ground insects
Subsoil chunks of rocks, and sediments composed of iron, clay, alluminum only a little organic matter lighter color
Regolith and Bedrock regolith= top parts:composed of broken rock bedrock= solid rock under regolith little or no organic matter some tree roots get into regolith but not bedrock
Formation of Soil Timeline 1.solid rock 2.broken down by weathering 3.transported and broken smaller by erosion 4.becomes particles called sediment 5.add organic matter 6.add water 7.add air 8.becomes rich, fertile soil
2 types of weathering mechanical,chemical
mechanical weathering ice wedging: water freezes in cracks and expands
chemical weathering raindrops absorb carbon dioxide which forms a weak acid and dissolves rock overtime
two causes of erosion rivers: flow downhill and carry sediments which erode river banks landslides: rocks and soil are quickly pulled downhill
know the layers/spheres of the earth 1.crust 2.mantle 3.outer core 4.inner core 5.hydrosphere- water 6.atmosphere- air 7.lithosphere- land 8.biosphere- living things
crust made up of plates oceanic and continental crust
mantle thick made up of molten lava/magma
outer core mostly made of iron very hot
inner core mostly made of iron the hottest layer
Created by: cateallie12
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