Inside Earth Ch. 2

Front 1

earthquakes

Back 1

the shaking and trembling that results from the movement of rock benteath the earths surface

Front 2

stress

Back 2

a force that acts on rock to change its shape or volume

Front 3

What do shearing, tension, and compression do?

Back 3

they work over millions of years to change the shape and volume of rock

Front 4

shearing

Back 4

stress that pushes a mass of rock in two opposite directions

it can cause rock to break and slip apart of change its shape

Front 5

tension

Back 5

this stress pulls on the crust, streching rock so that it becomes thinner in the middle

(extension, extending, away)

Front 6

comression

Back 6

this stress squeezes rock unitl it folds or breaks

Front 7

deformation

Back 7

any change in the volume or shae of Earth's crust

Front 8

fault

Back 8

a break in Earth's crust where slabs of crust slip past each other
faults usually occur along plate boudaries,where the forces of plate motion compress,pull,or shear the crustso much that the crust breaks

Front 9

stike-slip fault (caused by sheaing)

Back 9

the rock on either side of the fault slip past each other sideways with little or no up-or-down motion

Front 10

normal fault (caused by tension)

Back 10

the fault is at an angle, so one block of rock lies above the fault while the other block lies below the fault
half of fault above rock=hanging wall
half of fault below rock=foot wall