Collapse earthquake

A collapse earthquake is a small earthquake in underground caverns and mines that are caused by seismic waves produced from the explosion of rock on the surface.

Earthquake

Elastic rebound

An objects ability to ruturn to its original shape after being broken apart.

Epicenter
The point of the earth's surface directly above the focus of the earthquake.

Explosion earthquakes
Earthquakes witch are in result of the detonation of nuclear and chemical devices.

Fault
A fracture or a zone of fractures in rock along witch the two sides have been displayed relative to each other.

Focus
The point on the fault at witch the first movement or break accurred.

Force
A push or a pull having both mangnitude and direction equil to a change in an objects momentum.

Lithosphere
Soild, rocky, other part of the earth approximately 50 miles thick, it is parts of the crust and the solid portion of the mantle.

Mantle
the layer in the earth interior between the crust and the core.

Plate
a large, relaively rigid segment of the earth lithosphere that moves in relation to other plates over the asthenosphere It is extreamly big and solid.

Plate tectonics
A geological model in witch the earth lithosphere is divided into a number of more or less rigid segments witch move in reatoin to one another.

Seismograph
A instrument used to measure seismic waves.

Seismology
Science that deals with earthquakes and attendent phenomenon including the study of artificially produced elastic waves in the earth material.

Slip fault
The relative motion of one face or a fault relative to the other.

Stress
the measure of a force that is pushing on some thing elce.

Tectonic earthquakes
A earthquake that occurs when the earth's crust breaks

Recent earthquakes