Earthquakes are caused by the build-up of pressure that is created when tectonic plates collide. Eventually the plates slip past each other and a huge amount of energy is released, sending seismic waves through the ground. The point at which the fracture occurs is often several kilometers underground; it is known as the focus or hypo centre. The point directly above it on the surface is the epicentre, which is where most of the damage is caused. Earthquakes have different characteristics depending on the type of fault line, but when they occur underwater they can trigger enormous wave capable of huge devastation – these are called tsunamis.
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Chetan
Earthquakes are caused by the build-up of pressure that is created when tectonic plates collide. Eventually the plates slip past each other and a huge amount of energy is released, sending seismic waves through the ground. The point at which the fracture occurs is often several kilometers underground; it is known as the focus or hypo centre. The point directly above it on the surface is the epicentre, which is where most of the damage is caused. Earthquakes have different characteristics depending on the type of fault line, but when they occur underwater they can trigger enormous wave capable of huge devastation – these are called tsunamis.