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Types Of Rocks

Types Of Rocks



created for 5th grade science classroom

created for 5th grade science classroom



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    Types Of Rocks Types Of Rocks Presentation Transcript

    • Types of Rocks Sedimentary, Igneous, Metamorphic
    • Sedimentary Rocks
      • Made up of smaller rocks cemented together
      • Sometimes have fossils
      • Usually have layers.
    • Sedimentary Rocks
      • Form when loose sediment (rocks, sand) is deposited by water, compacted, and cemented together.
      • Form as a chemical reaction in the water that leaves a chemical deposit, usually on an ocean bottom.
      • Form along beaches, by rivers, or under the water in lake or oceans.
    • Sedimentary Rocks
    • Examples of Sedimentary Rocks
    • Igneous Rocks
      • Some were once liquid magma that erupted from volcanoes. They cooled very quickly. (Extrusive)
      • Others were once liquid magma, but they did not erupt from volcanoes. Instead, they cooled slowly underground. (Intrusive)
    • Igneous Rocks
      • Extrusive:
        • Rocks that are from cooled lava (above ground.
        • They cooled very quickly, therefore formed small crystals
      • Intrusive
        • Rocks that are from cooled magma (below ground)
        • They cooled very slowly, therefore formed large crystals.
    • Igneous Rocks
      • Which is extrusive and which is intrusive?
      Extrusive Intrusive
    • Igneous Rocks
    • Examples of Igneous Rock
    • Metamorphic
      • Form when igneous, sedimentary, or other metamorphic rocks are heated and/or squished, forming a new rock type.
      • Usually has interlocking crystals and layers (called foliation)
    • Metamorphic
      • This can either happen underground or above ground.
        • Underground: high pressure and heat
        • Above ground: volcano erupting
      • When classifying metamorphic rocks, they always come from a parent rock.
    • Metamorphic Rocks
    • Examples of Metamorphic Rocks
    • Review
      • What are the three rock types?
      • What are sedimentary rocks?
      • What are igneous rocks?
      • What are the two types of igneous rocks?
      • What are metamorphic rocks?
    • Copyright Information
      • All information was retrieved from research done on the internet in February 2007.
      • All pictures were retrieved from a Yahoo image search in February 2007.