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Inside Earth 2:1

Ch. 2:1 Earths crust is in motion

TermDefinition
stress A force acting on rock to change its shape or volume.
shearing Stress that pushes masses of rock in opposite directions
compression Stress that squeezes rock until it folds or breaks
tension Stress that stretches rock so that it becomes thinner in the middle.
deformation Stress that stretches rock so that it becomes thinner in the middle.
fault a break in Earth's crust where slabs of rock slip past each other.
strike-slip fault A fault where rocks on either side move past each other sideways with little up-or-down motion.
normal fault A fault where the hanging wall slides downward; caused by tension in the crust.
hanging wall The block of rock that lies above a fault line.
footwall The block of rock that lies below the fault line.
reverse fault A type of fault where the hanging wall slides upward.
anticline An upward fold in rock formed by compression of Earth’s crust.
fold A bend in rock that forms where part of Earth’s crust is compressed.
syncline A downward fold in rock formed by compression in Earth’s crust.
plateau A large area of flat land elevated high above sea level.
earthquake a break in the plates
Created by: dutchria11
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