- Earthquakes -sudden shaking of the earth caused by the movement of the crust.
- Tremors -vibration.
- Focus- the point under the surface where the earthquake happens.
- Faultline -the line of two plates.
- Epicentre - the point on the surface directly above the focus. The earthquake is the strongest here.
- Seismic waves -waves of tremors.
- Aftershock- smaller tremors that come after the earthquakes.
- Seismologist - a person who studies earthquakes
- Seismographs - an instrument that measures the strength of an earthquake.
- Richter scale - measures the strength of an earthquake .it goes from 1-8
- Moment Magnitude Scale (MMS) - measures the strength of an earthquake. It has now replaced the Richter scale.
HOW DOES AN EARTHQUAKE HAPPEN.
- Two plates collide/ sliding with each other.
- There is a huge build-up of pressure from the two plates.
- There is a huge release of pressure.
- The earthquake takes place.
- Massive damage begins to take place on the epicentre.
- Aftershocks begin to come.