A sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth’s crust.

A smaller earthquake following the main shock of a large earthquake.

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

A fracture in a rock formation along which there has been movement of the rocks on either side of the fracture

The line on a rock surface or the ground that traces a geological fault.

The place of origin of an earthquake or moonquake.

A mild tremor preceding the violent shaking movement of an earthquake.

A collapse of a mass of earth or rock from a mountain or a cliff.

The size of an earthquake as measured by the energy released.

The earth’s crust is cracked into different pieces called tectonic plates. Earthquakes can often be found at the plate boundaries.

Where two tectonic plates meet.

A way of measuring earthquakes. It is a logarithmic scale so that a difference of one has a roughly thirty fold difference in size.

The zone of activity surrounding the Pacific Ocean and the Pacific plate.

The waves of energy that travel out from an earthquake and are measured my seismographs.

Also called a seismometer. An instrument designed to measure earthquakes. It measures their duration and size.

A long high sea wave caused by an earthquake or other event.

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Earthquake Vocabular

Term	Definition
Earthquake	A sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the earth’s crust.
Aftershock	A smaller earthquake following the main shock of a large earthquake.
Epicentre	The point on the earth’s surface vertically above the focus of an earthquake.
Faults	A fracture in a rock formation along which there has been movement of the rocks on either side of the fracture
Fault line	The line on a rock surface or the ground that traces a geological fault.
Focus	The place of origin of an earthquake or moonquake.
Foreshock	A mild tremor preceding the violent shaking movement of an earthquake.
Landslides	A collapse of a mass of earth or rock from a mountain or a cliff.
Magnitude	The size of an earthquake as measured by the energy released.
Plates	The earth’s crust is cracked into different pieces called tectonic plates. Earthquakes can often be found at the plate boundaries.
Plate boundary	Where two tectonic plates meet.
Richter scale	A way of measuring earthquakes. It is a logarithmic scale so that a difference of one has a roughly thirty fold difference in size.
Ring of fire	The zone of activity surrounding the Pacific Ocean and the Pacific plate.
Seismic waves	The waves of energy that travel out from an earthquake and are measured my seismographs.
Seismograph	Also called a seismometer. An instrument designed to measure earthquakes. It measures their duration and size.
Tsunami	A long high sea wave caused by an earthquake or other event.

Created by: sharon.moye

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