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

8th Grade Science

Plate Tectonic

QuestionAnswer
Alfred Wegener proposed the theory of plate tectonics
tectonic plates pieces of the crust and the uppermost part of the mantle that cause changes in Earth's surface by their movement
plate tectonics describes large-scale movements of the Earth's Lithosphere
lithosophere made up of the crust and upper part of the mantle
asthenosphere beneath the lithosphere is part of the upper mantle and is so hot that it is part liquid
convection objects that are heated rise to the top. objects that are cooled sink, process by which heat is transferred by movement
Pangea an ancient super continent that broke up to make the seven continents we have today
evidence of Pangea groups of mountains formed around the same time on each side of the Atlantic Ocean, Mesosauraus fossils found in South America and Africa (fossil and mountain)
fault breaks in Earth's crust that form along plates
mid ocean ridges found huge underwater mountain ranges
sea-floor spreading hypothesis created by Harry Hess that gave more evidence to plate tectonic theory, molten rock form inside the earth rises through the cracks and forms new oceanic crust
convergent boundaries plate collide at boundary (mountains)
divergent boundaries plates move away from a boundary results in sea-floor spreading
transform boundary where plates slide past each other (earthquake)
subduction oceanic crust bends downward and sinks back into the mantle
plasticity the quality of being easily shaped or molded
Created by: SSC 8th LA