Science Test Review 1

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Science Test Review 1
2011-09-21 17:43:21
science test review vocabulary

Science test review unit 1 on Monday
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  1. What is sonar and how does it work?
  2. What is Pangaea?
    Pangaea is a super continent that broke apart over 200 million years ago.
  3. Where are the plate boundaries?
    Look at page B20 in green science textbook.
  4. What happens at plate boundaries?
    They move apart, come together, and slide in opposite directions. This can cause earthquakes and volcanoes.
  5. Explain and identify sea-floor spreading, and label what it would look like.
    B27 and B28
  6. How could different fossils/plants be located on two different continents (theory of continental drift)? And how can climate be a factor?
    Fossils were on a certain spot when Pangaea still existed, then it broke apart. Plants could have survived in a different climate zone when Pangaea existed.
  7. Tectonic Plates
    The dozen or so plates that make up the surface of the Earth.
  8. Mid-Ocean Ridge
    A series of mountain ranges on the ocean floor, more than 52,000 miles in length, extending through the North and South Atlantic, the Indian Ocean, and the South Pacific.
  9. Crust
    The solid, rocky outer portion or shell of the earth; lithosphere.
  10. Continental Drift
    The theory that the continents slowly moved apart millions of years ago.
  11. Sea-Floor Spreading
    The process by which new oceanic crust is formed by the convective upwelling of magma at mid-ocean ridges.
  12. Magnetic Reversal
    A change in the Earth's magnetic field resulting in the magnetic north being aligned with the geographic south, and the magnetic south being aligned with the geographic north.
  13. Plate Boundary
    The edges of individual tectonic plates.
  14. Convergent
    When two plates move towards each other. Colliding.
  15. Divergent
    When two plates move away from each other. Dividing.
  16. Transform
    When two plates slide against each other in the opposite direction.