An earthquake is a sudden, rapid shaking of the Earth caused by the breaking and shifting of rock beneath the Earth's surface.
(An earthquake; is; a sudden, rapid shaking of the Earth) (a sudden, rapid shaking of the Earth; caused; by the breaking and shifting of rock beneath the Earth's surface)
An earthquake a sudden, rapid shaking of the Earth
is caused
a sudden, rapid shaking of the Earth
by the breaking and shifting of rock beneath the Earth's surface