Use capitals on every word

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Across
  1. 3. When a celestial body falls on another celestial body
  2. 6. (space replaced by underscore) A narrow belt of wind
  3. 7. when something revolves around another thing
  4. 9. A path that electricity flows in
  5. 12. The movement of air
  6. 14. part of the atmosphere
  7. 16. A region with many organism living inside it such as a tundra
  8. 17. A different name for HEAT
  9. 19. A relationship with two different organism
  10. 20. It can be Kinetic or Potential
Down
  1. 1. The ride and fall of the water level in the ocean
  2. 2. A measure of hot or cold
  3. 4. A very bright object in space. Also is the sun
  4. 5. A transfer of energy through electromagnetic waves
  5. 8. When a meteorite hits the earths atmosphere
  6. 10. A bolt of light that comes down in a thunderstorm
  7. 11. Another name for sun
  8. 13. An organism that eats plant and animals
  9. 15. A microscopic organism that is in a plant or human
  10. 18. A celestial body that revolves the earth