Earth & Space Review

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Across
  1. 2. This is the relative size of crystals when there is a slow cooling rate(deep underground)
  2. 5. This is used to date objects and has a constant decay rate
  3. 7. This term refers to water that seeps into the ground
  4. 8. This type of boundary results in trenches
  5. 10. This is the direction of hurricanes in the SOUTHERN Hemispher
  6. 11. the process of transporting sediments by wind and water
  7. 15. photosynthetic organisms that contributed to O2 on Earth
  8. 17. This device measures atmospheric pressure
Down
  1. 1. This is what has been happening to the universe since the Big Bang
  2. 3. This type of eclipse occurs when the Earth gets between the Sun and the Moon
  3. 4. This is the direction of revolution of the moon
  4. 6. The Earth ___________, once every 24 hours at a rate of 15 degrees per hour
  5. 9. A circular movement within a current that keeps trash from flowing worldwide
  6. 12. If sediments are ___________, they will have the same porosity
  7. 13. This type of energy helps reduce the usage of fossil fuels
  8. 14. This term defines the percentage of radiation that reflects back into space
  9. 16. The universe is composed of about 25% of this gas