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.
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

TheoryPlateTectonics

8th Earth Science

QuestionAnswer
The hypothesis that today's continents were once part of a single landmass. continental drift
The scientist that proposed the idea of continental drift. Alfred Wegener
The name for the supercontinent where all the continents on Earth were one big landmass. Pangaea
The theory that states Earth's lithosphere is made up of giant, moving slabs (pieces). Theory of Plate Tectonics
A system of ideas that explains many related observations about the natural world. theory
Underwater mountain chains are called _________? mid-ocean ridges
The process by which new sea-floor forms is called ___________? sea-floor spreading
The process by which one tectonic plate is pulled beneath another tectonic plate. subduction
A change of the magnetic poles on Earth is called ________? magnetic reversal
The edge of where two tectonic plates meet. tectonic plate boundary
The process that causes melted rock in the mantle to move in circular motion and move the tectonic plates. convection currents
The process by which oceanic crust that forms at a mid-ocean ridge becomes thicker as it moves farther down the ridge. ridge push
The process of the subduction of cold, dense oceanic crust that is created from a mid-ocean ridge. The oceanic crusts gets colder and denser and sinks further into the mantle. slab pull