Glaciers and Earths Past

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Across
  1. 1. the measure of gravitational force on an object
  2. 5. the conditions of the atmosphere
  3. 7. When a species no longer has living members in existance
  4. 8. a long, narrow, deep inlet of the sea with steep sides or cliffs, formed by a glacier carving a U-shaped valley that is then flooded by seawater as the glacier retreats
  5. 9. the attractive force between all matter
  6. 12. the remains of ancient animals and plants
  7. 14. The average weather in a location over 30 years or more
  8. 15. the circulation of water through the hydrosphere
  9. 16. a period of time characterized by specific weather patterns and the length of day and night
Down
  1. 2. used to determine the age of other fossils
  2. 3. a glacial episode during a past geological period.
  3. 4. The eroded sediment that is deposited as glaciers expand and retreat
  4. 6. A flowing mass of ice and snow that forms on mountaintops
  5. 10. the comparison of fossils in different rock layers to determine how old a rock or fossil is
  6. 11. all of the fossils that have ever been found
  7. 13. a long cylinder of ice drilled from glaciers or ice sheets,