P2 2 Energy

2. A way of transferring energy that does not involve heating.
6. 1 kilowatt = 1000 W, symbol kW.
10. A material that does not conduct electricity or transfer energy well.
11. A power station that uses fossil fuels to generate electricity.
13. Energy stored in food and fuels.
14. The transfer of energy as a wave.
15. A rotating lever that reduces the force required to do work.
16. The unit of energy, symbol J.
17. Lever or gear that reduces the force required to do something, but increases the distance.
19. A material that conducts charge or energy well, such as a metal or graphite.
20. Energy that has become spread out or ‘wasted’ by heating the environment.
21. A measure of how hot or cold something is, measured in degrees Celsius.

1. The transfer of energy by the movement of gases or liquids.
3. Energy of moving objects.
4. Energy cannot be created or destroyed, only transferred.
5. A way in which energy is transferred through solids, and to a much lesser extent in liquids and gases.
7. Energy resources whose supply will not run out.
8. The unit of power, symbol W.
9. Energy stored when objects change shape
12. Radiation given off by the Sun and other objects that brings about energy transfer.
18. Objects are at thermal equilibrium when they are at the same temperature.