Discover how to measure the strength of an earthquake and the effects that major earthquakes have had.Our team of exam survivors will get you started and keep you going. Others can be so intense that they can create lots of damage and destroy towns and cities.
The crust (together with the upper layer of the mantle) is made up of different pieces, called . When this happens pressure builds up.
Earthquakes can happen along any type of plate boundary.Earthquakes occur when tension is released from inside the crust.
is the shaking and vibration of the Earth's crust due to movement of the Earth's plates (plate tectonics). The tectonic plates slide over the Earth’s surface because of the semi-molten currents beneath the crust. Sign in, choose your GCSE subjects and see content that's tailored for you. As plates carry on moving in different directions over long periods of time, friction causes energy to build up. The waves are felt most strongly at the epicentre, becoming less strong as they travel further away. Earthquakes are caused by the movement of the Earth's plates. An earthquake is the shaking and vibration of the Earth's crust due to movement of the Earth's plates (plate tectonics). When this pressure is eventually released, an earthquake tends to occur.The point inside the crust where the pressure is released is called the focus.
The most severe damage caused by an earthquake will happen close to the Earthquakes occur most often along geologic faults, narrow zones where rock masses move in relation to one another. The point on the Earth's surface above the Earthquake energy is released in seismic waves. People who live there, in countries such as Japan, are used to earthquakes happening and build earthquake-resistant buildings that sway with the shock waves rather than fall down.Although there are earthquakes in the UK, they are rare and so small that most people do not feel them.
This is called a As plates carry on moving in different directions over long periods of time, friction causes energy to build up. Earthquakes can happen along any type of plate boundary. Sometimes these plates lock together when they meet. Earthquake, any sudden shaking of the ground caused by the passage of seismic waves through Earth’s rocks.
Plates do not always move smoothly alongside each other and sometimes get stuck. Learn more about the causes and effects of earthquakes in this article.
Earthquakes can destroy settlements and kill many people. The magnitude scale is used to measure the size of earthquakes.Many earthquakes occur around the Pacific Ocean. Aftershocks can cause even more damage to an area. Eventually it becomes so great that the energy is released, which creates a shock wave - an .
If the earthquake is beneath the ocean it can create a huge There are thousands of earthquakes across the world each day and some are so small that they can only be detected by specialist equipment. What happens beneath the Earth’s surface to cause earthquakes?
These plates fit together like a jigsaw and are moving at a rate of a few centimetres a year, in different directions and at different speeds.Some plates slide past each other, others move away from each other and some bump into each other. These waves spread out from the focus.
Earthquakes occur in the crust or upper mantle, which ranges from the earth's surface to about 800 kilometers deep (about 500 miles).
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