Rocks and Minerals

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Rocks and Minerals

  1. 1. Rocks
  2. 2. Types of Rocks Sedimentary Rocks Metamorphic Rocks Igneous Rocks
  3. 3. Sedimentary Rocks How They are Made <ul><li>Wind and water break down the earth </li></ul><ul><li>Bits of earth settle in lakes and rivers </li></ul><ul><li>Layers are formed and build up </li></ul><ul><li>Pressure and time turn the layers to rock </li></ul>
  4. 4. Types of Sedimentary Rocks Gypsum Sandstone Shale Limestone Conglomerate
  5. 5. Metamorphic Rocks What are They? <ul><li>Rocks that have changed </li></ul><ul><li>They were once igneous or sedimentary </li></ul><ul><li>Pressure and heat changed the rocks </li></ul>
  6. 6. Types of Metamorphic Rocks Schist Gneiss
  7. 7. Igneous Rocks What are They? <ul><li>Fire Rocks </li></ul><ul><li>Formed underground by trapped, cooled magma </li></ul><ul><li>Formed above ground when volcanoes erupt and magma cools </li></ul>
  8. 8. Types of Igneous Rocks Granite Scoria Pumice Obsidian
  9. 9. Rocks Have Been Used For Many Years and For Many Things
  10. 25. Rocks

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