How does an Earthquake happen?
Energy is released and causes movement of the ground.
Why do earthquakes happen?
Because Earth`s tectonic plates are in constant movement.
What's an epicenter?
The point on the Earth's surface above the focus of the earthquake.
Explain what foreshocks are.
Small-scale earthquakes that occurs before the actual, larger earthquake.
How long does an Earthquake usually last?
A few seconds.
Where is the hypocenter located?
700km below the Earth's surface.
What are fault planes?
Irregularities that grind the plates to a halt. Typacally a curved interface.
What do seismic waves do?
Transmit an earthquakes energy over great distances.
Explain what aftershocks are.
Smaller earthquakes that happen after the main earthquake.