The earth

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This is a powerpoint I made for a university assignment, it was made with 7th grade in mind and is on The structure of the earth with a brief overview of plate tectonics.


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The earth

  1. 1. The Earth<br />-Structure<br />-Tectonic Plate Theory<br />
  2. 2.
  3. 3. The Earth<br />The earth is made up of _____ main sections.<br />These are the core, the mantle and the crust.<br />Each section is _________ and all three sections contribute to how the earth is ______.<br />
  4. 4.
  5. 5. The Core<br /><ul><li>The center of the _____ is known as the core.
  6. 6. The core is made of ___ segments, the molten metal (Iron) section and the _____ Iron segment.
  7. 7. The heat from the core _____ into the next section of the earth, the mantle and ______ it to melt.</li></li></ul><li>Liquid Outer Core<br />Solid Inner Core<br />
  8. 8. The mantle<br /><ul><li>The mantle mainly consists of _____, which is made of ______ minerals.
  9. 9. The heat from the core causes the hot magma to ____. It cools as it magma _____ again.
  10. 10. This is ______ a convection current</li></li></ul><li>Mantle<br />
  11. 11. The Crust<br /><ul><li>The crust is the final layer of the earths _________ is the crust.
  12. 12. It consists of separated ______.
  13. 13. These plates float on the ___ of the mantle.
  14. 14. The plates move as the follow the convection _______. This process takes many ______ and is called the Tectonic Theory.</li></li></ul><li>Crust<br />
  15. 15. The Lithosphere<br /><ul><li>The lithosphere is the name scientists give to the layer that is made by the crust and upper mantle.
  16. 16. All together, this is about 75-100KM _____ beneath continents but only about 55KM thick beneath ______.</li></li></ul><li>
  17. 17. Plate Tectonics<br /><ul><li>This theory ________ how mountains, volcanoes, and earthquakes, are formed.
  18. 18. 200 _______ years ago, there was only one big continent called _______. It _____ up to form the continents we see today.
  19. 19. The continents are still ______ today.</li></li></ul><li>
  20. 20. So, once again…<br /><ul><li>Core, both inner and outer
  21. 21. Mantle
  22. 22. Crust
  23. 23. Lithosphere
  24. 24. Plate tectonics</li>

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