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