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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:has a thickness of 15-75km.The crust also holds our countries and seas together.

MANTLE:there are two layers within the mantle.There is a upper and lower mantle.The upper mantle 400km thick and the lower and the lower mantle is 2300km thick.

OUTER CORE:The outer core is 2300km thick.The outer core has liquid.There is nickle,minerals and sulphur.

INNER CORE:The inner core is 1200km thick.The inner core is 6650 degrees Celsius (wow that is hot!!).  It is also solid.

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