Physics and Astronomy Terms

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Across
  1. 1. A cloud of gas and dust in space where stars can form
  2. 4. A large object that orbits a star and does not produce its own light
  3. 5. A massive ball of gas that produces energy through nuclear fusion
  4. 8. The rate at which work is done
  5. 10. An icy object that forms a glowing tail near the Sun
  6. 13. A small rocky object orbiting the Sun
  7. 14. Mass times velocity
  8. 17. All space matter and energy that exists
  9. 18. The force that attracts objects with mass toward each other
  10. 21. The number of waves passing a point per second
  11. 25. An object's tendency to resist changes in motion
  12. 26. A wave of energy like light radio or X rays that travels through space
  13. 27. The ability to do work or cause change
  14. 28. The amount of matter in an object
  15. 29. When a force causes an object to move over a distance
Down
  1. 2. A region in space where gravity is so strong that light cannot escape
  2. 3. A push or pull on an object
  3. 6. A tool used to observe distant objects in space
  4. 7. The range of different wavelengths of light
  5. 9. The distance light travels in one year
  6. 11. Speed in a given direction
  7. 12. A region where gravity affects objects around it
  8. 15. The process of combining small nuclei to release energy
  9. 16. The distance between repeating points on a wave
  10. 18. A large system of stars gas and dust held together by gravity
  11. 19. The rate at which velocity changes over time
  12. 20. A force that opposes motion between surfaces in contact
  13. 22. The force of gravity acting on an object
  14. 23. The curved path of an object around another due to gravity
  15. 24. A disturbance that transfers energy through space or matter