focus
The events that cause the Earth to quake and shake are earthquakes. An earthquake is caused when there is sudden movement under the Earth's surface.
epicenter
The epicenter
A sizemograph is used to mesure the sizemic waves under the earths surface
Earthquakes happen because of friction and shifting of the Earth's plates. This means it is very common to see irregularities in the plates just before an earthquake.
Focus
Focus
This is known as the focus or hypocentre of an earthquake.
The epicenter.
The epicenter.
The plates under the Earth's surface collide together:)
the plates under the ground banging together
The point beneath the earth's surface where an earthquake originates is called the hypocenter.
Epicenter
The focus of an earthquake is the location within the lithosphere where seismic energy is released when slippage first occurs along a fault line. The epicenter is the location on Earth's surface directly above the focus.
the epicenter (EP uh sen tur)
The events that cause the Earth to quake and shake are earthquakes. An earthquake is caused when there is sudden movement under the Earth's surface.