Social Studies Crossword Puzzle

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Across
  1. 2. divides the earth into the western and eastern hemispheres
  2. 4. a crack or break in earth's crust
  3. 5. tells the purpose of a map
  4. 7. spring equinox / first day of spring
  5. 8. lists and explains the symbols, colors, and lines used on a map
  6. 11. measures location using latitude and longitude
  7. 12. turn ocean water into fresh water by removing the salt
  8. 13. periodic change in pattern of ocean currents, water temperature, and weather in mid-pacific region
  9. 14. gradual warming of the earth and atmosphere that may be caused by pollution and the greenhouse effect
Down
  1. 1. rocky shell forming earth's surface
  2. 3. middle layer of the earth
  3. 6. changing of liquid water to a vapor
  4. 7. between 30 degrees north and 60 degrees north or 30 degrees south and 60 degrees south
  5. 9. excess water vapor becomes liquid
  6. 10. innermost layer of the earth