Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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

Science Vocab

Fossil the preserved remains or traces of ancient organisms
Pangaea the single giant landmass that existed more than 200 million years ago and that gave rise to the present day continents
Theory of Continental Drift the theory, proposed by Alfred Wegener, that the continents were once joined together and have since drifted apart
Mid-ocean Ridge an undersea mountain chain where new ocean floor is produced; a constructive (divergent) plate boundary
Ocean Floor Spreading the process in which old ocean floor is pushed away from a mid-ocean ridge by the formation of new ocean floor
Transform Fault a fault that runs across a mid-ocean ridge
Trench a V-shaped valley on the ocean floor where old ocean floor is subducted; a destructive (convergent) plate boundary
Subduction the process in which crust plunges back into the interior of the Earth
Theory of Plate Tectonics the theory that links together the ideas continental drifting and ocean floor spreading and explains how the Earth has changed over time
Tectonics the branch of geology that deals with the movements that shape the Earth's crust
Lithosphere the topmost solid part of the Earth, which is composed of the crust and some of the mantle
Divergent Boundaries a plat boundary at which plates move apart
Convergent Boundaries a plate boundary at which plates come together
Strike-slip Boundaries a plate boundary at which two plates slip past one another horizontally
Convection Currents a movement of materials caused by differences in temperature
Created by: Erin M



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:
restart all cards