Vocabulary#13 Earthquakes

Vocabulary#13 Earthquakes

Fault:A huge crack in the crust,at or below the surface,the sides of which may show evidence of motion.

Focus:The point where an earthquake starts,where rocks begin to slide past each other.


Seismic wave:a vibration that spreads out away from a focus when an earthquake happens.

 
Epicenter:The point on Earth`s surface directly above the focus.


Aftershock:The shaking of the crust after the initial shaking of an earthquake.


Seismograph:A sensitive device that detects the shaking of the crust.


Magnitude:The amount of energy released by an earthquake.