semester 1 exam review

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Anonymous
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129459
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semester 1 exam review
Updated:
2012-01-21 16:46:00
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earth science
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to help me pass
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  1. What is the formula for density?
    Mass divided by volume
  2. what is the dependant variable?
    it is a variable that depends on other factors, cannot cause a change in the idependent variable
  3. What is an idependent variable?
    • it is a variable that stands alone
    • the idependent variable causes a change in the dependent variable
  4. How are earthquakes measured?
    using a richter scale
  5. What evidence did alfred Wegener have for continental drift?
    • -similiar rock types
    • -fossil evidence
    • -climate evidence
    • -mountain belts
    • -coastlines for puzzle shape
  6. what is a hotspot?
    is a hot area in the mantle melts rock into magma that rises through the crust to form volcanoes.
  7. What are comets?
    they are small icy celestial body that orbits the sun.
  8. What is the first manned mission to the moon, and who landed on the moon?
    apollo 11, and Neil Armstrong was the first on the moon, and Buzz Aldrin as well.
  9. What is cosmology?
    is the study of the universe
  10. Explain the Big Bang theory
    that everything began as a single point and has been expanding ever since.
  11. What are the affects when the polar ice caps melt?
    There will be a ton of flooding and only high areas will not be covereed by water
  12. What is salinity?
    the amount of dissolved salt in a sample of ocean water.
  13. What are the moon phases for spring tides?
    New/Full
  14. What are the moon phases for neap tides?
    third quarter/ first quarter
  15. What is the deepest part of the ocean?
    The Mariana Trench
  16. What type of instruments measure length?
    Ruler, meter stick
  17. What tools measure volume?
    Graduated cylinder
  18. What tools measure mass?
    Triple beam balance or elctronic scale
  19. What are the layers of the atmoshpere from the surface up towards outer space?
    • 1.Troposphere
    • 2.Tropopause
    • 3. Sratosphere
    • 4. Stratosphere
    • 5. Mesophere
    • 6.Mesopause
    • 7. Thermosphere
    • 8. Exopshere
  20. Where are earthquakes most likely to occur?
    usually on a fault line
  21. How have volcanic erruptions contributed to the formation of the Earth's atmosphere?
    They add carbon dioxide, water vapor, amonia, and methane

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