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Warm Up – Page 78

Answer this on page 78 in your notebook: Mrs. Wilson, I still don’t get _________________. Could you explain it again?. Warm Up – Page 78. P-Waves – move back and forth and through liquids and solids S-Waves – move up and down and side to side and only through solids

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Warm Up – Page 78

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  1. Answer this on page 78 in your notebook: • Mrs. Wilson, I still don’t get _________________. Could you explain it again? Warm Up – Page 78

  2. P-Waves – move back and forth and through liquids and solids • S-Waves – move up and down and side to side and only through solids • By studying seismic waves, scientists realized the outer core is liquid 1

  3. Temperature, pressure, and density all increase 2

  4. Because of the intense pressure 3

  5. In the ocean – oceanic crust 4

  6. The lithosphere 5

  7. The asthenosphere 6

  8. Inner core – solid and outer core – liquid 7

  9. The movement of the liquid outer core 8

  10. Lower mantle 9

  11. All the continents were once part of a supercontinent. The continents separated and drifted to their present locations over time. 10

  12. He could not explain the mechanism that could move the continents 11

  13. Geologic – fit of South America and Africa • Fossil – various fossils found in places where the animals could not have traveled by water • Climate – tropical climate fossils found in cold areas; glacier deposits in Africa 12

  14. Mountains formed at oceanic-oceanic divergent plate boundaries 13

  15. As plates diverge, the sea floor spreads – or becomes larger; on the other side of the world, plates subduct so that the earth does not get larger 14

  16. Older rocks were farther from the ridge and younger rocks were near the ridge • The magnetic patterns in the rocks from the magnetic field reversals 15

  17. Deep ocean trenches are created at subduction zones as the older piece of plate once again becomes part of the mantle 16

  18. Oceanic crust – more dense – basalt • Continental crust – less dense - granite 17

  19. The plate that is more dense will subduct under the less dense plate; trenches, volcanoes, and mountains can form 18

  20. Divergent – two plates move away from each other • Convergent – two plates move towards each other • Transform –two plates slip past each other 19

  21. Mountain ranges 20

  22. Deep ocean trenches and volcanic mountain ranges 21

  23. Deep Ocean Trenches, Volcanoes, and Island Arcs 22

  24. Rift valleys and volcanoes 23

  25. Essay - Diagram

  26. Essay - Written

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