Natural Sciences

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Across
  1. 2. energy produced with running water
  2. 4. ability to do work
  3. 5. instrument studying planets
  4. 8. energy source that can be use again
  5. 9. example of insulator
  6. 12. fossil fuel
  7. 13. imaginary line
  8. 15. form of heat transfer
  9. 16. earth's closest natural satellite
  10. 17. parts working together
  11. 18. curved path of a body around a larger body
Down
  1. 1. pulling force
  2. 3. result of the earth revolving around the sun
  3. 5. rise and fall of ocean levels
  4. 6. planet called home
  5. 7. form of heat transfer
  6. 10. keeping things hot or cold
  7. 11. study of space and the universe
  8. 14. made from maize , soybeans
  9. 15. form of heat transfer
  10. 19. movement in a circular path