Friday, January 20, 2012

Our Planet

Earth is the 3rd planet from the sun. It is estimated that out planet is covered out of 29% land and 71% salt water. Our planet was formed over 4.5 billion years ago an is expected to carry on its orbit for 500 million years - 2.3 billion years. Our planet is the only one that we humans know has life.

Underneath what you see today there are tectonic plates. On the borders of these plates there usually volcanoes, earthquakes and mountains. This is because the plates collide or crash into each other.
Tectonic Plates of the world
 
 On the left are the plates of the world. When they crash against each other the force causes an earthquake.

If the plates have an equal force they will start rising to the surface, this creates mountains and volcanoes.








This is the direction the plate move in.

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