How earthquake starts?

Answer 1

Earthquakes are a sudden release of energy in the Earth's crust.

Earthquakes most commonly occur at the boundaries of tectonic plates where stresses accumulate in the earth's crust over time, causing energy to be stored in the form of elastic strain (like that in a compressed spring).

Ultimately this stress will exceed the shear strength of the crust in the fault or boundary zone causing a sudden brittle failure or rupture.

This in turn causes movement and a sudden release of the stored elastic strain energy in the form of seismic waves (as well as heat) causing an earthquake.

Answer 2

How Does An Earthquake?

An Earthquake forms by 2 plates moving.

For Example:

The Christchurch Earthquake started when

The Indo-Australian and the Indo-Pacific plates

Over-lapped each other. Christchuarch is on the

"Fault Line" of the plates so that is why Christchurch had

The Earthquake..... So this helps!! )

Answer 3

by two plates of the earth rubbing against one another like the world is full of i think its 5 plates which move every now and then, they then rub together which causes friction hence an earthquake

Answer 4

Earthquakes are caused by the sudden release of energy stored in the Earth's crust. This can occur along faults where tectonic plates are sliding past or colliding with each other. The movement of these plates creates stress that builds up until it is released in the form of seismic waves, resulting in an earthquake.

Answer 5

Earthquakes are caused by the movement of tectonic plates. When the plates separate or slide past each other suddenly, it make the Earth tremble. That's an earthquake.

Answer 6

It happens when two stressed plates slide pass each other

Answer 7

An earthquake (also known as a tremor or temblor) is the result of a sudden release of energy in the Earths's crust that creates seismic waves.

Answer 8

Tectonic plates under earths crust move.