Chapter 9 Science

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Author:
fifthgrade
ID:
135506
Filename:
Chapter 9 Science
Updated:
2012-02-27 11:50:28
Tags:
Earth Processes
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This is a set of flashcards for chapter 9 science.
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  1. Three categories of rocks
    • igneous
    • sedimentary
    • metamorphic
  2. solid substances with a definite chemical composition
    mineral
  3. hardened in the earth's crust(cool slowly and have large crystals)
    Intrusive
  4. hardened outside the earth's crust (cool quickly and have small crystals)
    extrusive
  5. examples of igneous rock
    granite, basalt, obsidian, and pumice
  6. form when wind and water break down other rock types
    sedimentary rocks
  7. sandstone, limestone, shale, and conglomerate
    examples of sedimetary rocks
  8. forms when large amounts of heat and pressure are applied to other rock types
    Metamorphic rocks
  9. marble, slate, gneiss are examples of
    metamorphic rock
  10. a stream of water that flows deep beneath the oceans surface
    deep ocean current
  11. The ocean's density is affected by what?
    It's tempature and amount of salt.
  12. The way the Earth's rotation affects wind and ocean current's
    Coriolis affect
  13. affected by its temperture and amount of salt
    oceans density
  14. a periodic change in oceanicand atmospheric conditions, causing unusually warm surface water
    El Nino
  15. what can cause shifts in weather patterns around the world that include warmer winters heavy rains floods droughts and tornadoes.
    El Nino
  16. solid substances with a definite chemical composition
    minerals
  17. the movement of cold, deep, ocean water to the ocean's surface
    upwelling
  18. rocks can serve as natural compasses.
    a mineral called magnentite contains molecules that always points toward magnetic north.
    magnetic reversals
  19. an undersea volcanic mountain found on the ocean floor
    seamount
  20. the quality of having two opposite poles-one positive and one negative
    polarity
  21. the process by which one lithospheric plate is forced under another
    subduction
  22. a stream of water that flows deep beneath the ocean's surface
    deep ocean current
  23. what mineral is known to orient itself toward magnetic north?
    magnetite.

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