Faulting of rock in earth 's crust causes earthquakes.
Faults, cracks in the earth's crust, produce earthquakes when they move or slip.
Earthquakes happen when faults move. .
What happens when faults move?

a) The crust falls apart
b) Dilution
c) Rocks break
d) scattered light
e) symptoms
f) Earthquakes
g) The ground closes
h) mechanical