Energy

1. the opposing force exerted by a surface as an object moves across it.
4. The unit used to measure energy.
6. the energy possessed by an object in motion
8. The energy that allows us to see and plants to make food.
9. Energy produced by the movement of electrons.
12. A form of energy produced by vibrating objects.
13. a force transmitted through a string, rope or wire which is pulled tight by forces acting from each end.
14. The energy transferred due to temperature differences.

2. a force applied to an object by a person or another object.
3. a push or a pull
5. Energy that travels through solids, liquids, and gases but not through a vacuum.
7. The type of energy involved in photosynthesis
10. is the change in the position of an object over time relative to a reference point
11. is the gravitational pull on an object
15. The factor of an object that, along with speed, affects its kinetic energy.