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Convergent: Two plates move into

each other. The less dense plate

moves over top of the more dense

plate.

Divergent: Two plates move apart from

each other and magma fills the gap that

is formed.

Transform: Two plates slide next to each

other, moving in the opposite direction.

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Strike-slip: Rocks that slide past each other horizontally with little to no vertical movement.

Normal: Two rocks moving apart from each other.

Thrust(reverse): One Rock moves on top of the other rock.

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The epicenter is important because

the geologists will know where the

earthquake originally formed.

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An explosion earthquake is an earthquake

which results of nuclear and chemical

devices

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Collapse earthquakes are small earthquakes

in the underground and in mines that are caused

by seismic waves produced from the explosion of

rock on the surface.

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A volcanic earthquake is an earthquake

induced by the movement (injection

or withdrawal) of magma.

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Tectonic

Volcanic

Collapse

Explosion

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A tectonic earthquake is one that occurs when the earth's crust breaks due to geological forces on rocks and adjoining plates that cause physical and chemical changes.

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A scale, ranging from 1 to 10, for

indicating the intensity of an earthquake.

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A small earthquake or tremor that

follows a major earthquake.

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A longitudinal earthquake wave that travels

through the interior of the earth and is usually

the first conspicuous wave to be recorded by a

seismograph.

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A transverse earthquake wave that

travels through the interior of the

earth and is usually the second

conspicuous wave to reach a seismograph.

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A places where plates slide past each other.

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The point of origin of an earthquake.

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an extended break in a body of rock, marked

by the relative displacement and discontinuity

of strata on either side of a particular surface.

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the point on the earth's surface vertically above the focus of an earthquake.

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Fault

Epicenter

Focus

Transform Boundary

S Wave

P Wave

After Shock

Rictor Scale

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An earth quake starts when an S Wave, or

seismic wave, makes the ground shake

after a sudden release of energy. The

release of energy comes from where the

rock breaks underground, called the focus.

And the place right above the focus is called

the epicenter.

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Earthquakes are formed by the tectonic plates of the

Earth moving in the convergent, divergent, and transform

form. The plates move away, together, or underneath

each other causing an earthquake.