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Rocks
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Transcript

  • 1. Earth Materials: Rocks and Minerals
  • 2. Rocks have many properties, including shape, size, color, and texture.
  • 3. Geologists use rock properties to help identify different rocks.
  • 4. Rocks are made of many ingredients. These ingredients are called minerals.
  • 5. Minerals have only ONE ingredient – the mineral itself.
  • 6. Evaporation is a technique used to separate liquid from solid parts of a mixture.
  • 7. Crystal patterns left from evaporation can help us identify minerals.
  • 8. Minerals have different properties, too. Properties can include size, color, shape, mass, and …
  • 9. … hardness. A scratch test is used to find the hardness of a mineral.
  • 10. The Moh’s Scale of Hardness tells us the hardness or softness of a mineral.
  • 11. Calcite is one of the most common minerals on Earth.
  • 12. Calcite is the only mineral that bubbles when it comes in contact with cold acid.
  • 13. Evaporation can be used as an extra test to show a rock contains calcite.
  • 14. Granite is a rock made up of minerals, including feldspar, hornblende, mica, and quartz.