Contents

1)Earthquakes

2) Earthquake Effects

3) Continued

4)Volcanoes

5)The Building

6)Active, Dormant and Extinct

7)Conclusion

Earthquakes

The earth is divided into three main layers the crust (the layer we walk on) the mantle (the layer underneath the crust) and the core (the very centre of the earth). The crust is made up of plates there are ocean plates and continental plates. The continental plates shift and collide and if they collide violently they can cause powerful earthquakes. Even when two continental plates slide by each other one rough point on one meets a rough point on the other can cause an earthquakes. You dont have to be at the point were the plates collide to feel the earthquake, the earthquake would send out seismic waves (or shockwaves), and out at sea which can be just as devastating as the initial impact these waves can cause natural such as Tsunamis.

Other Earthquake Effects

Tsunamis are large water waves, typically generated by seismic waves. Tsunamis can be up to 50 meters tall and sometimes even more. They cause havoc in Japan where their main source of food is fish destroying all their boats and their harbours. Imagine this is the effect of an earthquake that maybe miles out at sea. Some Tsunamis can travel miles without hitting anywhere but cause of the sheer power of a Tsunamis they are best to hit nothing than to come crashing down on land.

Continued

Some of the other affects of earthquakes are Volcanoes. A violent Earthquake can awake some Volcanoes when the Volcanoes are under pressure. This is true as the seismic waves help release the pressure the volcano is under by causing the pressure to be forced .Up and out of the volcano.

Volcanoes

Volcanoes are spots in the Earths Crust where pressure has built up and has caused lava to seep out (lava is the name for the substance magma when it come into contact with air). The lava is the molten rock from the mantle. When the lava builds up and cools it creates a mound the size of the mound depends on the amount of lava that seeps out. Some time it is not because of pressure that the volcano is created but because of the plates moving away from each other and sometimes even because the collide and force magma up from the mantle.

The Building

When a volcano erupts it lets out lots of things into the air such as ash and toxic gases. If you are to close to a volcano when it erupts you could be hit by more than just ash but by great chunks of molten rock. These rocks can sometimes fly up to a mile away from the volcano. The lava combined with ash forming layers and layers of ash and lava until it builds up to a mountain and sometimes when a volcano reaches a certain size it can become extinct.

Active Dormant and Extinct

An Active volcano is a volcano erupting and is considered likely to do so in the future. A Dormant volcano is literally, "sleeping." The term is used to describe a volcano which is presently inactive but which may erupt again. Most of the major volcanoes are believed to be dormant rather than extinct. An Extinct volcano is volcano that is not presently erupting and is not likely to do so for a very long time in the future.

Conclusion

In conclusion I have found that some natural disasters are linked and that they affect one another. They can even be the cause of each other this is they way mother nature intended it to be.