8th Grade Review

1234567891011121314151617181920
Across
  1. 4. How loud or soft a sound is.
  2. 5. How often a wave happens; it affects pitch.
  3. 7. A huge group of stars, planets, and gas held together by gravity.
  4. 8. The planet we live on.
  5. 11. An imaginary line an object spins around.
  6. 12. The height of a wave; it affects loudness.
  7. 13. The path an object follows around another object.
  8. 16. Half of a sphere, like half of Earth.
  9. 18. The largest planet in our solar system.
  10. 19. A natural object that orbits a planet.
  11. 20. Harm or injury to something.
Down
  1. 1. wave A vibration that travels and can be heard.
  2. 2. A magnet made using electricity.
  3. 3. A push or a pull.
  4. 6. Energy an object has because it is moving.
  5. 9. When two objects hit each other.
  6. 10. A fast back-and-forth movement.
  7. 14. To move in a path around something else.
  8. 15. The material sound travels through (like air or water).
  9. 17. How high or low a sound is.