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
edit
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

Earthquake

study

TermDefinition
Stress The force that acts on rock to change it's shape or volume
Tension The stress force that pulls on the crust and thins the rock in the middle
Compression The stress force that squeezes rock until it folds or breaks
Shearing Stress that pushes rock in two opposite directions
Normal fault Where rock is pulled apart by tension in Earth's crust
Reverse Fault The same structure as a normal fault but the blocks move in a reverse direction
Strike-slip fault The rocks on either side of the fault slip past each other side ways with a little up or down motion
Plateau A large area of flat land elevated high above sea level
Earthquake The shaking and trembling that results from movement of rock beneath earths surface
focus An area beneath Earth's surface where rock begins that was under stress begins to break or move
Epicenter The point on the surface directly above the focus
P waves Are seismic waves that compress and expand the ground like an accordion
S waves Seismic waves that can vibrate from side to side or up and down
Surface waves Move slower than P and S waves but they can produce more severe ground movements
Seismograph An instrument that records and measures and earthquake's seismic waves
Richter Scale This rates the magnitude of small earthquakes based on the size of the earthquake's waves as recorded by seismographs
Magnitude Is a single number that geologists assign to an earthquake based on the earthquakes size
Modified Mercalli Scale This rates the amount of shaking from an earthquake
Moment Magnitude Scale Rates the total energy an earthquake releases
Seismograph Is the record of pattern lines of an earthquakes seismic waves
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