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.

Remove Ads
Don't know
Know
remaining cards
Save
0:01
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:
Retries:
restart all cards




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

river erosion

QuestionAnswer
what are waterfalls? waterfalls are vertical interruptions in the rivers profile that occur due to vertical erosion in the youthful stage
examples torc waterfall powerscort waterfall
How do waterfalls occur occur where a band of hard rock lies upstream of soft rocks
how do they erode rock river has a high velocity and therefore large erosive power which vertically erodes the river bed
what is differential erosion the soft rock is eroded faster than the hard rock.
how does hydraulic action erode the water bed The swirling water carves out out hollows across the river bed through hydraulic action
whats abrasion broken rocks become trapped in hollows causing them to deepen and widen.
The rate of hydraulic action is increased. Its impact shatters the rock at the base creating a plunge pool
hydraulic action and abrasion widen the plunge pool causing it to erode backwards this is known as undercutting
what is an overhang as undercutting continues the layer of hard rock is left elevated
eventually the overhang becomes unstable and collapses which increases the rate of abrasion
how is a gorge created as undercutting and collapsing continues the waterfall gradually retreats upstream which is known as headward erosion which creates steep sided valleys
Created by: Megan k