Energy Revision

2. Does not allow electricity or heat to pass through it easily.
3. When heat energy is applied to a substance the particle theory says that they spread out and move __________.
5. Heat energy always moves from the hotter object to the ________ object.
6. The Law that states energy can not be created or destroyed.
9. In everyday language one might call this a battery (however a battery is 2 or more of these).
10. Can be either on or off in a circuit.
12. The term used to describe how long a wave is.
13. One way heat can be transferred.
15. Which is faster sound or light?
16. Allows electricity or heat to pass through it easily.
17. The term used to describe how large a wave is in its height.

1. Sounds that are higher than the human ear can hear (dog whistles, ultrasound imaging).
4. The way a circuit could be wired that still allows the electricity to flow even if one of the loads (say a light) blows or is broken.
7. Electricity is the flow of ___________ charged particles.
8. Where light bends as it passes from one transparent object to another.
10. Circuits can be wired either as parallel or ________.
11. The ability to do work.
14. A process that allows heat to travel through an object by "bumping" particles.
18. A sound can be described by its volume (loudness) and its __________.