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Rock
Rock
Rock
Rock
Rock
Rock
Rock
Rock
Rock
Rock
Rock
Rock
Rock
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Rock

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This is a type of Rock...

This is a type of Rock...

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  • 1. Rocks 8.3.4 Explain how igneous,metamorphic, and sedimentary rocks are interrelated in the rock cycle. Students do not need to know the examples of each type ofrock shown in this powerpoint. They are for information only.
  • 2. Each type of rock isformed differently and can change from one type to another over time.
  • 3. Types of RocksIgneous Rocks Metamorphic Rocks Sedimentary Rocks
  • 4. Sedimentary Rocks How They are Made• Forms from the compaction and/or cementation of rock pieces, mineral grains, or shell fragments called sediments.• Sediments are formed through the processes of weathering and erosion of rocks exposed at Earth’s surface.• Sedimentary rocks can also form from the chemical depositing of materials that were once dissolved in water.
  • 5. Types of Sedimentary Rocks Sandstone LimestoneGypsum Conglomerate Shale
  • 6. Igneous Rocks What are They?• · Forms when molten rock (magma) cools and hardens.• · If cooling takes place slowly beneath Earth’s surface, the igneous rock is called intrusive.• · If the cooling takes place rapidly on Earth’s surface, the igneous rock is called extrusive.
  • 7. Types of Igneous RocksGranite ScoriaPumice Obsidian
  • 8. Metamorphic Rocks What are They?• Forms when rocks are changed into different kinds of rocks by great heat and/or pressure.• They are heated, squeezed, folded, or chemically changed by contact with hot fluids.
  • 9. Types of Metamorphic RocksSchist Gneiss
  • 10. Rock Cycle• The rock cycle is an ongoing process.• It is a series of natural processes that can change rocks from one kind to another. Check out the diagram on the next slide!
  • 11. Rock Cycle
  • 12. Rocks 8.3.4 Explain how igneous,metamorphic, and sedimentary rocks are interrelated in the rock cycle.
  • 13. Thank you!!!

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