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The image above shows some of the impacts that earthquakes can have on places.
An earthquake is a sudden and violent shaking of the ground. Earthquakes occur from movements of the Earth's tectonic plates. This happens when the energy that is stored in Earth's crust is suddenly released. That causes the ground to shake suddenly, as well as sends what we know as seismic waves throughout the Earth. Seismic waves are the waves of elastic energy that is being sent out.
Earthquakes will always happen where there is a faut line. A fault line is a fracture (or zone) in the Earth's crust. Some different faults include:
Normal fault: This is when a piece of rock moves from one place to another or moves down.
Reverse fault: This is when the body of rock tilts or rotates.
Strike-Slip fault: This is when distortion occurs and the rock changes shape (like a fold).
This image shows the different fault types.
Earthquake intensities are measured using magnitude scales. The Ritcher scale measures Earthquake's magnitude based on their seismic waves using a scale of 1 - 10. Although there are other magnitude scales, The Ritcher scale is what we use today.
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