Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
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

317; Lecture 20

TermDefinition
Lag deposits a residual accumulation of coarse rock fragments on a surface after the finer material has been blown away by the wind
Desert pavement forms in desert environments
Stone pavement forms in alpine and periglacial environments with sparse vegetation
Deflation hollows depressions that form unconsolidated material as fine grained sediment is carried away by deflation
Yardangs streamlined, sharp, and sinuous ridges that extend parallel to the wind and are separated by parallel depressions
Ventifacts stones shaped by the erosive action of windblown sand
Dunes collections of loose sand deposited by the wind
Stoss upwind side of dune, gentle slope
Lee downwind side of dune, steep slope
Free dunes deposited in flat, expansive areas with little obstructions  Deposited by sedimentation and accretion
Anchored dunes deposition controlled by vegetation and topography
Dunefields sand covers area <30,000 kilometers squared
Sand sea sand covers area >30,000 kilometers squared
Crescentic/Barchan dunes crescent-shaped mounds that bend away from wind direction, unidirectional wind
Linear/Transverse dunes straight or slightly sinuous ridges longer than they are wide, bidirectional wind but one direction is dominant over the other
Star dunes radially symmetrical, arms radiate from a central mound, multidirectional wind
Dome dunes oval, circular mounds lacking a slipface, rare and not well understood
Parabolic dunes u-shaped, similar form to crescentic, but the dune bends upwind instead of downwind
Loess a loosely compacted yellowish-brown deposits of windblown silt particles
Created by: turboqueen
 

 



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