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