1.2.1

The Earth's Layers

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The Earth's Layers

The Earth has 3 layers: core, mantle, crust. Each layer has a different consistency (thickness and make-up):

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Core

  • The core is in the centre and split into 2 layers:
    • Inner metallic core (solid).
    • Outer core (liquid).
  • The core is the hottest part of the Earth.
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Mantle

  • The mantle surrounds the core.
  • The mantle consists of semi-molten rock.
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Crust

  • The crust is a very thin outer shell of the Earth.
    • The crust is the layer we live on.
    • The crust is between 5-100 km thick.
  • The crust is floating on the semi-solid rock mantle.
  • The crust is broken into large pieces called tectonic plates.

Jump to other topics

1The Challenge of Natural Hazards

1.1Natural Hazards

1.2Tectonic Hazards

1.3Weather Hazards

1.4Climate Change

2The Living World

3Physical Landscapes in the UK

3.1The UK Physical Landscape

3.2Coastal Landscapes in the UK

3.3River Landscapes in the UK

3.4Glacial Landscapes in the UK

4Urban Issues & Challenges

5The Changing Economic World

6The Challenge of Resource Management

6.1Resource Management

6.2Food

6.3Water

6.4Energy

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