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Earthquake

Of or pertaining to the natural phenomenon when tectonic plates slide or move causing the Earth's surface also move which causes devastating damage to cities and towns.

Contributors in Earthquake

Earthquake

Phase

Natural environment; Earthquake

A stage in a periodic motion measured with respect to a reference and expressed in angular measure.

Plate (tectonic)

Natural environment; Earthquake

A large unit of the earth's lithosphere that moves relative to other plates and the interior of the earth.

Plate tectonics

Natural environment; Earthquake

The theory of movement and interaction of large plates of the earth's crust that explains earthquakes, volcanos and other geologic processes as consequences of the movement.

Plates

Natural environment; Earthquake

Giant slabs of underground rocks, often bigger than continents.

Primary wave

Natural environment; Earthquake

Fast-moving body waves that push and pull on rocks laterally; they move at 3 miles (5 km) per second.

Recurrence interval

Natural environment; Earthquake

The average time between specific events at a particular site.

Reflection (seismic wave)

Natural environment; Earthquake

Seismic energy that has been returned (reflected) from an interface of materials of different elastic properties.

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