Across
- 3. Rate of energy transfer or rate of doing work.
- 4. Forces that need to be contact between objects.
- 7. Electric charges on insulating materials.
- 8. An object that has its own magnetic field around it.
- 10. A quantity that has both size and direction.
- 12. A force between two surfaces that resists motion.
- 13. A quantity that has a magnitude (size) but not a direction.
- 16. The space where non-contact forces are felt.
- 18. The force between charges.
Down
- 1. The attractive force acting between all masses.
- 2. A force that pushes things up in liquids and gases.
- 5. Pairs of forces on interacting objects with same size in opposite directions acting on different objects.
- 6. The force caused by magnets or magnetic materials.
- 9. The size of something.
- 11. A contact force that acts at right angles to a surface as a reaction to a force on that surface.
- 14. A force that can affect something from a distance.
- 15. Energy transferred when a force acts through a distance.
- 17. Something needed to make things happen or change.