Unit 3 Vocab

1234567891011121314151617181920212223242526
Across
  1. 4. 25. Theory that the universe was originally a singularity and is expanding at a constant rate
  2. 7. 10. An object in space that produces light and is held together by gravity
  3. 8. 13. A device that magnifies stars and planets so they can be observed
  4. 11. 16.A device that identifies materials by observing specific wavelengths of light
  5. 12. 1. All existing matter and space
  6. 13. 26. A small, dense star about the size of a planet
  7. 18. 2. A large group of stars
  8. 20. 5. The amount of matter in an object
  9. 22. 22. A rotating disk of gas and dust orbiting a young star
  10. 24. 6. The amount of gravitational force on an object
  11. 25. 24. A tide after a 1st or 3rd quarter moon where the difference between high and low is least
  12. 26. 3. The galaxy that we are in
Down
  1. 1. 21. A large cloud of gas and dust in space
  2. 2. 8. The distance that light travels in a year
  3. 3. 4. Attractive force between all matter
  4. 5. 19. Gravitational pull on the Earth created by the moon
  5. 6. 11. A diagram comparing stars' brightness to their temperature (remember to hyphenate)
  6. 9. 14. Anything that orbits an object in space
  7. 10. 15. A spacecraft designed to transmit information about its environment
  8. 14. 20. Change in a wave's frequency as it moves relative to the observer
  9. 15. 17. The wavelengths of light that a material emits
  10. 16. 7. An object with so much gravity that light is pulled in
  11. 17. 9. Reaction where atoms combine to form different elements
  12. 19. 18. An explosion created by a star
  13. 21. 23. A tide after a new or full moon where the difference between high and low is greatest
  14. 23. 12. When an object in space revolves around another object due to gravitational pull.