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Inside Earth Ch. 2:1
Earth's Crust in Motion
Question | Answer |
---|---|
A force acting on rock to change its shape or volume. | stress |
Stress that pushes masses of rock in opposite directions. | shearing |
Stress that squeezes rock until it folds or breaks. | compression |
Stress that stretches rock so that it becomes thinner in the middle. | tension |
A change in the volume or shape of Earth’s crust. | deformation |
A break in Earth's crust where slabs of rock slip past each other. | fault |
A fault where rocks on either side move past each other sideways with little up-or-down motion. | strike-slip fault |
A fault where the hanging wall slides downward; caused by tension in the crust. | normal fault |
The block of rock that lies above a fault line. | hanging wall |
The block of rock that lies below the fault line. | footwall |
A type of fault where the hanging wall slides upward. | reverse fault |
A mountain that forms where a normal fault uplifts a block of rock. | fault-block mountain |
A bend in rock that forms where part of Earth’s crust is compressed. | fold |
An upward fold in rock formed by compression of Earth’s crust. | anticline |
A downward fold in rock formed by compression in Earth’s crust. | syncline |
A large area of flat land elevated high above sea level. | plateau |