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The rock cycle


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WHAT IS NATURAL STONE ? How to Identify Rocks by Bill Langer of USGS? What is the rock cycle. Different of nature stone

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The rock cycle

  1. 1. The Rock Cycle Whitmore High School Harrow Edited by Eshine Jewelry ---- Silver Jewelry , Brass Jewelry , Jewelry Manufacturer and Exporter
  2. 2. Sedimentary rocks Sandstone Conglomerate Limestone
  3. 3. Sedimentary rocks How sedimentary rocks are formed: 1) Weathering 2) Transportation 4) Burial 3) Deposition
  4. 4. Metamorphic rocks Slate Marble Quartzite
  5. 5. Metamorphic rocks Metamorphic rocks are formed by the combined effect of heat and pressure on other rocks: Pressure from rocks above… … and heat from magma nearby
  6. 6. Igneous rocks Granite Pumice Obsidian
  7. 7. Igneous rocks Igneous rocks are formed when lava or magma cools down and solidifies If the lava or magma cools QUICKLY it has SMALL crystals If the lava or magma cools SLOWLY it has BIG crystals
  8. 8. Summary Sometimes have tiny crystals, no fossils, always hard and sometimes arranged in layers Other rocks were acted on by heat and pressure over a long time (e.g. marble, slate) Contain crystals, very hard, never contain fossils Liquid rock (magma or lava) cooled down and turned back into a solid (e.g. basalt, granite) Usually soft, can contain fossils, easily eroded Small pieces of sediment were stuck together by salt and pressure from rocks above (e.g. sandstone, limestone, chalk) Appearance How they were formed Sedimentary, igneous or metamorphic?
  9. 9. The Rock Cycle
  10. 10. Rocks revision quiz <ul><li>What are the 3 types of rock? </li></ul><ul><li>What type of rock are the following: </li></ul><ul><ul><ul><li>Sandstone, limestone, granite, basalt, slate </li></ul></ul></ul><ul><li>What type of rock would a mountain probably be made out of? </li></ul><ul><li>What are the two conditions needed for a metamorphic rock to form? </li></ul><ul><li>Which metamorphic rock is formed from limestone? </li></ul><ul><li>Why wouldn’t you find any fossils in igneous or metamorphic rocks? </li></ul><ul><li>You find a rock containing crystals. What type of rock would it most probably be? </li></ul><ul><li>What is molten rock that is inside the Earth called? </li></ul><ul><li>What is molten rock that is outside the Earth (i.e. erupted) called? </li></ul>
  11. 11. Rocks revision quiz <ul><li>Name one example of physical weathering. </li></ul><ul><li>Name one example of biological weathering. </li></ul><ul><li>Acid rain is an example of chemical weathering. What poisonous gas (given off by car exhausts and power stations) causes acid rain? </li></ul><ul><li>Granite is an igneous rock and contains large crystals. Did it cool down slowly or quickly? </li></ul><ul><li>In the rock cycle what causes igneous rock to become sedimentary rock? </li></ul><ul><li>In the rock cycle again what causes the sedimentary rock to become metamorphic rock? </li></ul><ul><li>Gravestones are usually made out of marble or granite instead of limestone or sandstone. Why? </li></ul><ul><li>A piece of rock contains layers. What type of rock would it probably be? </li></ul>