Annayah Vocabulary Crossword

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Across
  1. 3. Unit (AU) — The average distance from Earth to the Sun.
  2. 8. Universe — The part of the universe we can observe.
  3. 12. Year (ly) — The distance light travels in one year.
  4. 14. — The path an object follows around another object.
  5. 15. — A push or pull that can change motion.
Down
  1. 1. Magnitude (m) — How bright an object appears from Earth.
  2. 2. (pc) — A distance unit equal to about 3.26 light-years.
  3. 4. Fusion — The joining of small atomic nuclei that releases energy.
  4. 5. (L) — The total energy an object gives off per second.
  5. 6. Method — A process used to test ideas with evidence.
  6. 7. Magnitude (M) — How bright an object would appear from a standard distance.
  7. 9. — A positively charged particle in an atom.
  8. 10. — A particle in an atom with no electric charge.
  9. 11. — The smallest basic unit of an element.
  10. 13. — The force that pulls objects toward each other.