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13 terms

Inside Earth Chapter 2 Section 1

STUDY
PLAY
stress
a force that acts on rock to change its shape or volume
tension
stress force; pulls on the crust, stretching the rock so that it becomes thinner in the middle
compression
stress force; squeezes rock until it folds or breaks
shearing
stress that pushes a mass of rock in two opposite directions
fault
break in the rock of the crust where rock surfaces slip past each other
normal fault
caused by tension in Earth's crust; pulls rock apart
hanging wall
the block of rock that lies above the fault
footwall
the rock that lies below the fault
reverse fault
has the same structure as a normal fault, but the blocks move in opposite directions; caused by compression
strike-slip fault
the rocks on either side of the fault slip past each other sideways, with little up or down motion; caused by shearing
anticline
a fold in rock that bends upward into an arch
syncline
a fold in rock that bends downward to form a valley
plateau
large area of flat land elevated high above sea level