Restless Earth

Restless Earth

1. Earths Layers

   • Core
     • Very hot, 2 cores (inner and outer)
       • Inner Core - the centre and is the hottest part of the Earth. It is solid and made up of iron and nickel with temperatures of up to 5,500°C.
       • Outer Core - is the layer surrounding the inner core. It is a liquid layer, also made up of iron and nickel. It is still extremely hot, with temperatures similar to the inner core.
   • Mantle
     • is the widest section of the Earth. It has a thickness of approximately 2,900 km. The mantle is made up of semi-molten rock called magma. In the upper parts of the mantle the rock is hard, but lower down the rock is soft and beginning to melt.
   • Crust
     • The crust is the outer layer of the earth. It is a thin layer between 0-60 km thick. The crust is the solid rock layer upon which we live.

2. Tectonic Plates

   • Constructive
   • Destructive
   • Conservative
   • Collision

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