Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
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

plate boundaries

PLATE TECTONICS the theory that solid plates move on top of a slowly flowing mantle.
PLATE BOUNDARIES the edges where different plates on Earth are touching.
CONVERGE to come together
CONVERGENT BOUNDARY a boundary at which two plates collide, causing mountain building or subduction.
HIMALAYAS a mountain range formed when the Indian plate collided with the Eurasian plate.
SUBDUCTION the process of one plate sliding under another. The denser plate is driven down into the mantle.
RING OF FIRE an area circling the edges of the Pacific Plate where large numbers of earthquakes and volcanic eruptions occur.
VOLCANIC ARC a range of continental volcanic mountains formed along a subduction zone. The Cascade Mountains along the Northwest coast of the United States and the Andes Mountains along the Western coast of South America are examples.
ISLAND ARC an island chain formed as one oceanic plate subducts under another and produces magma at depth below the over-riding plate. Japan, the Philippines, the Mariana Islands, and the Aleutian islands are all examples.
OCEAN TRENCHES deep valleys formed underwater in subduction zones. A trench marks the position at which a flexed subducting plate begins to dive beneath another plate.
MARIANA TRENCH deepest known part of the world's oceans. Located in the western Pacific Ocean, to the east of the Mariana Islands.
DIVERGE to separate
DIVERGENT BOUNDARY a boundary at which two plates are separating. As the plates move in opposite directions, magma bubbles up, forming new crust.
MID-OCEAN RIDGE an underwater mountain range that is almost 50,000 miles long.
MID-ATLANTIC RIDGE part of the Mid-Ocean Ridge located along the floor of the Atlantic Ocean.
RIFT VALLEY deep valley which runs down the middle of the Mid-Ocean Ridge.
SEA FLOOR SPREADING the idea that new seafloor crust forms at mid-ocean ridges and then spreads in opposite directions. The youngest rocks of the ocean floor are at the diverging boundary, moving outward.
TRANSFORM BOUNDARY a boundary in which two plates scrape and slide past each other. The San Andreas Fault is one such boundary.
Created by: jfkscience
Popular Earth Science sets




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