Unit 7 Science

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Across
  1. 2. a unit of length equal to the distance light travels in space in a year
  2. 4. second most common galaxy
  3. 6. a force that holds things together
  4. 7. information that indicates whether something is true
  5. 8. collection of planets and their moons in orbit around a large star
  6. 11. used to measure most distances in the solar system
  7. 13. no matter can escape its gravitational field
  8. 14. an explanation of an aspect of the natural world and universe that can be tested
  9. 15. the galaxy in which we live in
Down
  1. 1. most known galaxies, including the Andromeda
  2. 3. all the space, time, matter, and energy that exists
  3. 5. meters, grams, liters
  4. 9. explosion of a large star
  5. 10. collection of stars, dust, and gases that are held together by gravity
  6. 12. large cloud of gas and dust in space