Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
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:
restart all cards

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



Stress A force that acts on rock to change its shape or volume
Compression squeezes rock until it folds or breaks
Shearing Stress that pushes a mass of rock in two opposite directions
Normal Faults Tension in Earth's crust pulls rock apart
Hanging wall The block of rock that lies above
Footfall The block of rock that lies below
Reverse fault has the same structure as a normal fault, but the blocks move in opposite direction
Strike-Slip fault Rocks on either side of the fault slip past each other sideways,with little up or down motion
Anticline A fold in rock that bends upward into an arch
Syncline A fold in rock that bends downward to form a valley
Plateau A large area of flat land elevated high above sea level
Earthquake is the shaking and trembling that results from the movement of rock beneath Earth's surface
Focus is the area beneath Earth's surface where rock that is under stress breaks, triggering an earthquake
Epicenter The point on Earth's surface directly above the focus
P waves First waves to arrive
S waves After p waves comes secondary waves
Surface waves Move more slowly than P waves and S waves, but they can produce severe ground movements
Mercalli Scale was developed to rate earthquakes according to the level of damage at a given place
Magnitude Number that geologists assign to an earthquake based on the earthquake's size
Richter scale Rating of an earthquake's magnitude based on the size of the earthquake's seismic waves
Seismograph The seismic waves are measured by a seismograph
Moment Magnitude Scale A rating system that estimates the total energy released by an earthquake
Created by: Sarah.E.Rosa