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Friday 17 June 2011

Layers of the Earth

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.

To... help us in topic and science and learn about the earth around us.

The crust contains continents and seas. The thickness of the crust is 15-75km.

The upper mantle is 400km thick. Its made out of iron, magnesium and silicates.

The lower mantle is more dense than the upper. It is 2300km thick.
Did you know that the outer core is liquid. It contains iron, nickel and sulphur. The outer core is 2300km deep. On earth sulphur is a soft yellow rock that comes from a star, when it’s fuel is out.

The inner core is solid, which means its hard. It contains iron, nickel and sulphur. Nickel is a silvery-white metal and an element number. Are you aware that the inner core temperature is 6650 degrees Celsius?


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