Himani

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Across
  1. 2. the capacity to do work.
  2. 3. an object so massive and dense that even light cannot escape its gravity.
  3. 8. the physical forms of matter.
  4. 9. a natural or artificial body that revolves around a planet.
  5. 11. the amount of water vapor in the air.
  6. 13. a narrow belt of strong winds that blow in the upper troposphere.
  7. 15. a relationship between two species in which both species benefit.
  8. 16. the basic unit of length in the Sl.
  9. 17. the change of state from a gas to a liquid.
  10. 19. a test model of a product.
  11. 21. the time required for Earth to rotate once on its axis.
  12. 22. a large, reddish star late in its life cycle.
Down
  1. 1. a force that opposes motion between two surface that are in contact.
  2. 4. an orbit that is less than 1,500km above the Earth surface.
  3. 5. a movement of ocean water that follows a regular pattern.
  4. 6. a large body of air where temperature and moisture content are similar throughout.
  5. 7. any form of water that falls to the Earth's surface from the clouds.
  6. 8. a tide of increased range that occurs two times a month, at the new and full moon.
  7. 10. an organism that eats only plants.
  8. 12. an organism that is killed and eaten by another organism.
  9. 14. a measure of the amount of matter in an object.
  10. 18. describes the nonliving part of the environment.
  11. 20. the transfer of energy as electromagnetic waves.