grade 7 physics crossword

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Across
  1. 2. can’t change the volume of liquids. We say they are ......................
  2. 3. a free fall, the time of falling is independent of .................. .
  3. 4. person determined that an object displaces the same volume of fluid as its own volume.
  4. 8. of motion.
  5. 12. – Unit o force.
  6. 14. simpliest atom is made of one proton and one .................... .
  7. 15. line along which a body moves.
  8. 17. of velocity in unit time.
  9. 18. /Transfer of thermal energy.
  10. 19. speed or distance are ................... quantities.
  11. 21. stored in a body relative to its position above the ground.
  12. 22. force acts on a moving body to help it to stop.
Down
  1. 1. is .............. . It is impossible to say if a body is in motion or rest if we don’t have a reference frame.
  2. 5. of work.
  3. 6. bodies are plastic, elastic and brittle.
  4. 7. kinetic energy of particles o a body.
  5. 9. force and velocity are ................ quantities.
  6. 10. much work is done in a unit time.
  7. 11. to Dalton, all substances are made of .............. .
  8. 13. force is an upward force that fluids exert on any object that is placed in them. It occurs because the fluid below an object exerts greater pressure on the object than the fluid above it.
  9. 16. law of ...................... tells us that a change in pressure at any point in an enclosed fluid is transmitted equally throughout the fluid.
  10. 20. of a body to resist change