Ch. 10 (IAC) Vocab Natural Hazards

Front

Earthquake

Back

The vibrations in the ground that result from movement along breaks in Earth’s lithosphere.

Front

Epicenter

Back

The location on Earth’s surface directly above an earthquake’s focus.

Front

Fault

Back

A break in Earth’s lithosphere where one block of rock moves toward, away from, or past another.

Front

Focus

Back

A location inside Earth where rocks first move along a fault, starting seismic waves.

Front

Seismic Wave

Back

Energy that travels as vibrations on and in Earth.

Front

Seismogram

Back

A graphical illustration of seismic waves.

Front

Seismometer

Back

An instrument that measures and records ground motion and can be used to determine the distance seismic waves travel.

Front

Cinder Cone

Back

A small, steep-sided volcano that erupts gas-rich, basaltic lava.

Front

Composite Volcano

Back

A large, steep-sided volcano that results from explosive eruptions of andesitic and rhyolitic lava and ash along convergent plate boundaries.

Front

Hot Spot

Back

A volcano that is not associated with plate boundaries.