The earth rocks
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The Earth & Rocks PowerPoint PPT Presentation

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The Earth & Rocks. Visit For 100’s of free powerpoints. Crust. Mantle. Core. The Earth. 10km to 100km thick. Extends almost halfway to centre Solid properties but flows. Iron & Nickel Just over half the Earth’s radius Liquid outer core Solid inner core.

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The Earth & Rocks

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The earth rocks

The Earth & Rocks


For 100’s of free powerpoints

The earth rocks




The Earth

10km to 100km thick

Extends almost halfway to centreSolid properties but flows

Iron & NickelJust over half the Earth’s radiusLiquid outer coreSolid inner core

The average density of the Earth is much greater than the density of the rocks that form the crust. This means that the interior of the Earth is made from different and denser materials than the crust

The earth rocks

Sedimentary rocks

Metamorphic rocks

Igneous rocks

The Rock Cycle


Formed by high pressure & temperatureEvidence of mountain building processesAssociated with Earth movements

Have been moltenCrystalsIntrusive – big crystalsExtrusive – small crystals

The earth rocks




Upside down

The Crust


Sedimentary rocks in layersYounger rocks usually on top of older rocks


Sedimentary rocks are also found:

This shows that the Earth’s crust is unstable and has been subjected to very large forces

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