Ch. 3B Vocabulary Flashcard

Front

A break in rock along which rock slabs have moved

Back

fault

Front

A shaking or movement of Earth's surface, caused by the release of stored energy along a fault

Back

earthquake

Front

A scale of numbers by which the magnitude of earthquakes is measured

Back

Richter scale

Front

A huge, powerful ocean wave caused by an underwater earthquake

Back

tsunami

Front

The point, or place, at which an earthquake begins

Back

focus

Front

The force or strength of an earthquake

Back

magnitude

Front

A less powerful shock following the principal shock of an earthquake

Back

aftershock

Front

An instrument that records the intensity, duration, and nature of earthquake waves

Back

seismograph

Front

The point on Earth's surface directly above an earthquake's point of origin

Back

epicenter