Science

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Across
  1. 2. 0.7g/cm³
  2. 4. Change of state
  3. 7. Mercury barometer
  4. 8. The hardest natural substance on Earth
  5. 9. Increase in volume
  6. 12. Can be compressed easily
  7. 13. Collision between particles
  8. 18. New substance is made
  9. 19. Mass of a unit volume
  10. 20. Water behaviour near freezing point
  11. 22. Source of light
Down
  1. 1. Vibrate back and fro in its position
  2. 2. Happens to rock
  3. 3. Jiggling motion in dust
  4. 4. Larger weight than upthrust force
  5. 5. Unit of force
  6. 6. Hot and cold
  7. 10. Cool down
  8. 11. Float
  9. 14. Branch of physics
  10. 15. Jupiter satellite
  11. 16. Force on a boat
  12. 17. Frequency (unit)
  13. 21. No fixed shape