Across
- 4. the amount of force with which gravity pulls something towards the Earth. It is measured in newtons(N)
- 5. a force that pushes things up in liquids and gases
- 6. how fast something is moving
- 11. in balance
- 13. when two forces on an object are the same strength but in opposite directions
- 16. to change speed
- 18. a way of transferring energy by waves. they cannot travel through a vacuum.
- 20. the difference between forces in two opposite directions
- 21. a sloping surface
- 23. a way of transferring energy from hot substances to cooler ones
- 24. the force put on something
- 26. change shape
Down
- 1. the unit for the moment of a force
- 2. a way of transferring energy by waves. usually refers to its visible form
- 3. a force that slows things down that are moving through air
- 7. a way of saying how much energy something wastes
- 8. spread out
- 9. a simple machine consisting of a wheel that can turn on an axis with a rope running around it
- 10. the energy transferred when a force moves an object
- 12. a force between two objects that are touching.it usually acts to slow things down or prevent movement
- 14. a simple machine that consists of a long bar and a pivot
- 15. fuel formed from the dead remains of organisms over millions of years
- 17. a gas or a liquid
- 19. another name for air resistance or water resistance
- 22. a point about which something turns
- 25. the weight or force on something