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Randy B. ES6
chapter 6 vocab
29
Science
7th Grade
10/03/2013

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Term
stress
Definition
A force that acts on rock to change its shape or volume.
Term
tension
Definition
Stress that stretches rock so that it becomes thinner in the middle.
Term
compression
Definition
Stress that squeezes rock until it folds or breaks.
Term
shearing
Definition
Stress that pushes masses of rock in opposite directions, in a sideways movement.
Term
normal fault
Definition
A type of fault where the hanging wall slides downward; caused by tension in the crust.
Term
hanging wall
Definition
The block of rock that forms the upper half of a fault.
Term
footwall
Definition
The block of rock that forms the lower half of a fault.
Term
reverse fault
Definition
A type of fault where the hanging wall slides upward;caused by compression in the crust.
Term
strike-slip fault
Definition
A type of fault where rocks on either side move past each other sideways with little up-or-down motion.
Term
anticline
Definition
An upward fold in rock formed by compression of Earth's crust.
Term
syncline
Definition
A downward fold in rock formed by compression in Earth's crust.
Term
plateau
Definition
A landform that has high elevation and a more or less level surface.
Term
earthquake
Definition
Term
focus
Definition
Term
epicenter
Definition
Term
p wave
Definition
Term
s wave
Definition
Term
surface wave
Definition
Term
Mercalli scale
Definition
Term
magnitude
Definition
Term
Richter scale
Definition
Term
seismograph
Definition
Term
moment magnitude scale
Definition
Term
seismogram
Definition
Term
friction
Definition
Term
liquefaction
Definition
Term
aftershock
Definition
Term
tsunami
Definition
Term
base-isolated building
Definition
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