An earthquake is shaking of the earth. It’s a nature event. It is caused due to release of energy, which generates waves that travel in all directions.
- Focus/Hypocentre: The point where the energy is released is called the focus/ Hypocentre of an earthquake.
- Epicentre: The point on the surface which is nearest to the focus of energy is called epicentre. It is the first one to experience the waves. It is a point directly above the focus.
Measurement of earthquake:
- Magnitude: It is measured by Richter Scale
- Intensity: It is measured by Mercalli Scale.