Science - Physics Revision

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Across
  1. 2. The amount of force with which gravity pulls something towards the Earth. Its measured in newtons (N).
  2. 3. A gas or liquid
  3. 5. force The difference between forces in 2 opposite directions
  4. 7. Change of shape.
  5. 9. energy A name used to describe energy when its stored in materials
  6. 11. resistance A force that slows things down that are moving through water. It is caused by friction and by the object pushing the water out of the way.
  7. 13. To change speed.
  8. 16. energy A name used to describe energy when its stored in stretched or squashed objects.
  9. 17. potential energy A name used to describe energy when its stored in objects in high places that can fall down.
  10. 18. energy Energy from the sun.
  11. 22. energy A name used to describe energy when its stored in chemicals. Food, fuels and batteries all stored chemical energy.
  12. 23. A way of transferring energy through wires.
  13. 24. per seconds Unit for distance is metres and time is seconds.
  14. 25. resource Any energy resource that will run out because we cannot renew our supplies of it.
  15. 26. forces When 2 forces on an object are the same strength, but in opposite directions its caused by friction.
  16. 27. energy a name used to describe energy when it is stored in hot objects. The hotter something is the more thermal energy it has.
  17. 29. potential energy a name used to to describe energy when its stored in stretched or squashed things that can change back back to their original shapes.
  18. 30. A force between 2 objects that are touching. It usually acts to slow things down or prevent movement.
Down
  1. 1. per hours unit for speed when the distance is measured in kilometers.
  2. 4. A force that pushes things up in liquids and gases
  3. 6. graph A graph that shows how far and how fast something travels.
  4. 8. fuels A fuel from the remains of a dead organism over millions of years.
  5. 10. Another name for air resistance or water resistance
  6. 12. A way of transferring energy from hot substances to cold ones.
  7. 14. forces When 2 forces acting in opposite directions on an object are not the same strength they change the motion of objects.
  8. 15. A way of transferring energy by waves. Sound waves travel through substances. They cannot travel through a vacuum.
  9. 19. A way of transferring energy by waves.
  10. 20. resistance A force that slows things down that are moving through air
  11. 21. resource An energy resource that will never run out.
  12. 28. speed The total distance something travels divided by the total time takes is the mean.