Cabral, sheila mariz

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Cabral, sheila mariz

  1. 1. What is Earth made of?
  2. 2. Rocks How do rocks form? Igneous Rocks Sedimenta ry RocksMetamorph ic Rocks Cycle
  3. 3.  Rocks are found in the thinnest layer of the lithosphere called crust. You can find rocks everywhere, in rivers, seas, oceans, and mountains as well as in plains. back
  4. 4. Like living things, rocks undergo cycles.This cycle involves heat, pressure, and chemical reaction that lead changes and formation. back
  5. 5.  Igneous rocks are formed from magma. May occur underground or above the surface. Cools slowly (underground) Cools quickly (above) Intrusive igneous rocks formed large crystals. Extrusive igneous rocks formed small fine crystals. Color: white, gray, green and red Strength: used for constructing roads; hard and tough back
  6. 6.  are formed by means of weathering heat, wind, rainwater,, chemical reaction, and even living things can break igneous rocks into sediments These agents of weathering will lead the sediments at the bottom of rivers, lakes and oceans. Particles of rocks and shells will be deposited and settled for a period of time and will form sediments. After a long period of time, these deposited materials are cemented to each other to form what is so called sedimentary rocks. These rocks can also provide information about ancient life. back
  7. 7.  are formed due to heat inside the earth These heat is generated from pressure, friction, and chemical components. Rocks form crystals and increase their size when heated. These rocks are denser and more crystalline compared to sedimentary and igneous rocks. Heat inside the Earth can change metamorphic rocks into magma. back
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