The document discusses the three main types of rocks: sedimentary, metamorphic, and igneous. Sedimentary rocks are formed from the compression of sediment layers over time. Metamorphic rocks were once sedimentary or igneous rocks, but were changed by heat and pressure. Igneous rocks form either underground from cooled magma or above ground from volcanic eruptions. Examples of each rock type are also provided.

1. Rocks

2. Types of Rocks
Sedimentary Rocks
Metamorphic RocksIgneous Rocks

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

4. Types of Sedimentary Rocks
Gypsum
Sandstone
Shale
Limestone
Conglomerate

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

6. Types of Metamorphic Rocks
Schist Gneiss

7. Igneous Rocks
What are They?
 Fire RocksFire Rocks
 Formed underground by trapped, cooledFormed underground by trapped, cooled
magmamagma
 Formed above ground when volcanoesFormed above ground when volcanoes
erupt and magma coolserupt and magma cools

8. Types of Igneous Rocks
Granite Scoria
Pumice Obsidian

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

19. IGNEOUS ROCK
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20. SEDIMENTARY ROCK
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21. METAMORPHIC ROCK
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