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Rocks.

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Presentation on theme: "Rocks."— Presentation transcript:

1 Rocks

2 Types of Rocks Metamorphic Rocks Igneous Rocks Sedimentary Rocks

3 Sedimentary Rocks How They are Made
Wind and water break down the earth Bits of earth settle in lakes and rivers Layers are formed and build up Pressure and time turn the layers to rock

4 Types of Sedimentary Rocks
Sandstone Limestone Gypsum Conglomerate Shale

5 Metamorphic Rocks What are They?
Rocks that have changed They were once igneous or sedimentary Pressure and heat changed the rocks

6 Types of Metamorphic Rocks
Schist Gneiss

7 Igneous Rocks What are They?
Fire Rocks Formed underground by trapped, cooled magma Formed above ground when volcanoes erupt and magma cools

8 Types of Igneous Rocks Scoria Granite Pumice Obsidian

9 Rocks Have Been Used For Many Years and For Many Things

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25 Rocks


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