earth science - earthquakes and earths interior CH 8
Earthquakes
an earthquake is the vibration of earth produced by the rapid realse of energy.
Foreshock
Small earthquakes called forshock often come before a major earthquake. These foreshocks can happen days or even before a major quake.
Aftershocks
The movements that follow a major earthquake aften produce smaller earthquakes called aftershocks.
Faults
Earthquakes are usually associated with large fractueres in earth's crust and mantle called faults.
Elastic rebound hypothesis
This explanation for the release of energy stored in deformed rocks is called the elastic rebound hypothesis.
Siemograph
siemograph are instruments that record earthquake waves.
Epicenter
the epicenter is the location on the surface directly above the foces.
Foces
the point within earth where the earthquake starts is called foces.