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Rocks, Fossils and Soil .

Rocks, Fossils and Soil. Lesson 12. WALT - Group and make drawings of rocks with Hardness Test. What are the 3 types of Rocks?. Igneous rock is formed from molten rock that has cooled and hardened. Sedimentary rock is formed from material that has settled into layers and hardened.

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Rocks, Fossils and Soil .

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  1. Rocks, Fossils andSoil . Lesson 12

  2. WALT-Group and make drawings of rocks with Hardness Test.

  3. What are the 3 types of Rocks? • Igneous rockis formed from molten rock that has cooled and hardened. • Sedimentary rockis formed from material that has settled into layers and hardened. • Metamorphic rockis a rock that has changed by heat and pressure.

  4. 3 types of Rocks

  5. Examples…

  6. The Rock Cycle Sedimentary Igneous Metamorphic

  7. Another Rock Cycle

  8. How much time does it take to form a rock? If you squeeze and heat a rock for a few million years, it can turn into a new kind of rock. How do Rocks form?

  9. Continued… • Where does the heat come from? • When rocks are close enough to the magma to be heated but not close enough to be melted, the rocks can be changed.

  10. Continued… • Where does the pressure come from? • Rocks below the surface are squeezed by the layers of rock above them. The thicker the layers, the more pressure there is.

  11. What makes up the earth?

  12. How do we know the strength of rocks and minerals? • The Mohs Hardness Scale was designed for us to use as a scale to determine the strength of rocks and minerals. Here are some examples that we could test using the scale.

  13. Mohs Hardness Scale

  14. In Conclusion… • Rocks and Minerals are found everywhere on earth. • Rocks are made from minerals and can contain several different kinds. • Rocks can be divided into 3 different groups based on their properties. • People use rocks in many different ways!

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