Friday, 17 June 2011

The Earth's Layers

WALT: make a model of the layers of the earth out of play-dough.

So...that when we learn about natural disasters we can use our knowledge of the layers to understand them better. us in topic and science and learn about the earth around us.

The Layers of the Earth!

The crust is thickness is 15-75km this is surrounding the worlds. The crust carries the countries and seas.

The mantle is layer below the crust. Did you know there is two of these layers which is called the Upper mantle and the Lower mantle. The Upper Mantle is about 400km thick and the lower mantle is 2500km thick.

Below the mantle lives the Outer Core. The outer core is 2300km thick. It has liquid, nikel and sulphur.

The Inner core however is not liquid, this is solid and contains iron and nickel. It’s 1220km thick and are you aware that the temperature is 6650c. This lies in the middle.

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