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

Plate Boundaries

QuestionAnswer
Two plates come together at what boundary? Convergent
Two plates spread apart at what boundary? Divergent
Two plates slide past each other at what boundary? Transform
New oceanic crust (sea floor) is created at this boundary. Divergent Oceanic
Oceanic crust (sea floor) is destroyed at this boundary. Convergent (except for Continental-Continental because crust is too buoyant)
The process where oceanic crust slides under another plate and is melted is called ___________. subduction
What events/features occur near subduction zones? Trenches, Volcanoes, and Earthquakes
A divergent boundary on land creates what feature? Rift Valleys (ex. Great Rift Valley in Africa)
A divergent boundary in the ocean creates what feature? Mid Ocean Ridges (ex. Mid-Atlantic Ridge)
When two continental plates converge (collide) what type of crustal feature is formed? folded mountains (ex. Himalaya Mountain Range)
The process that occurs at a divergent oceanic boundary that creates new crust (sea floor) is called? seafloor spreading
What is happening in the mantle that helps move the lithospheric plates? convection currents
If an earthquake occurs at the bottom of the ocean floor what could form? tsunami
Convergent boundaries involving oceanic crust always undergo subduction which creates what two crustal features? trenches and volcanoes
What is the only event associated with transform boundaries? earthquakes (ex. San Andreas Fault)
What is the only event associated with ALL plate boundaries? earthquakes
True or False: Trenches are formed at Divergent oceanic boundaires False (Mid ocean ridges are formed at divergent oceanic boundaries from the pressure of the magma uplifting the crust.)
True or False: Divergent boundaries are where subduction zones occur. False (Subduction zones occur at convergent boundaries involving oceanic crust)
The two types of the Earth's crust are __________ and ___________. Oceanic and Continental
The difference between oceanic crust and continental crust is... Oceanic crust is mostly made of Basalt (more dense) and Continental crust is mostly made of Granite (less dense)
Harry Hess helped discover what theory? Seafloor Spreading
Alfred Wegener discovered what theory? Continental Drift
What two theories largely contributed to Plate Tectonic Theory? Seafloor Spreading (Hess) and Continental Drift (Wegener)
Tsunamis are formed from what two types of convergent boundaries? oceanic-oceanic and oceanic-continental
Why doesn't subduction occur at continental-continental convergent boundaries? Because continental crust is too buoyant to be subducted into the mantle. (The plated fold up to create folded mountains instead.)
Created by: fordi85
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