Across
- 4. attractive force between two objects
- 5. it has a positive charge
- 8. is the transfer of energy by electromagnetic waves
- 9. is a inclined plane wrapped in a spiral around a cylindrical post
- 13. is the SI unit of energy
- 14. force that opposes the sliding motion between two touching surfaces
- 16. is the amount of work done in one second
- 17. refers to the properties and interactions
- 19. when a object changes its position relative to a reference point
- 20. how fast something is going
Down
- 1. test the affects of one thing or another control
- 2. is an inclined plane with one or two slopping slides
- 3. is a device that makes doing work easier
- 6. a large wheel that rotates when pushed by wind,water, and steam
- 7. occurs when what the scientist expects changes how the results are viewed
- 10. gravitational force exerted on an objects
- 11. a push of pull
- 12. a material on which heat flows through slowly
- 15. is the transfer of energy that occurs when a force makes up an objects
- 18. mother for studying the natural world