Unit 2.3

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Across
  1. 2. - the cell between 30 and 60 degrees
  2. 6. - warmer periods in the Earth’s temperature. Highest peaks have been around 17 degrees C (12,7)
  3. 7. Cylinders of ice drilled out of ice sheet(3,5)
  4. 8. - the cell between the equator and 30 degrees
  5. 9. What period were climates equal or higher to today’s? (8,6)
  6. 12. - The geological time period of the is last 2 million years of the planet (10,6)
Down
  1. 1. - cooler periods in the Earth’s temperature (7,6)
  2. 3. what are tropical storms measured in? (6,7)
  3. 4. - cooler climates than today and rivers froze during winters (6,3,3)
  4. 5. -the cells between 60 and 90 degrees
  5. 10. the scientific method of dating trees(16)
  6. 11. What has always fluctuated? (11)