what is an earthquake


A Earthquake is a natural disaster because a lot of damage can be done.Did you know that thousands of earthquakes happen each year but aren't noticed,but 100,000 are felt.But some are so tiny that they travel across the earth not felt, you could see big cracks forming in the earth's surface or footpaths.
Layers of the Earth
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this is how much damage it can do
The crust is the first layer of the earth.The crust is very thin. The mantle is the layer on earth.This is by far the thickest layer on earth.Did you know that there are two types of cores.The outer core,and the inner core. The core is in the middle of the earth.
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