Across
- 2. '___________ of energy' is the total energy stored before = total energy stored after.
- 4. Device that is made to rotate by mechanical working.
- 6. The rate of energy transfer. Measured in watts (W).
- 7. Energy resources that can be easily replenished or are effectively limitless. These resources will not run out by being used.
- 9. energy store of a moving object.
- 10. Thermal ___________ - A situation where two objects are at the same temperature and there is no overall transfer of energy by heating between them.
- 11. When energy is transferred so that it is stored in less useful ways, eg by heating to the surroundings.
- 13. A material that does not allow current to flow through it easily, eg wood or glass.
- 14. Hotter fluid is less dense than colder fluid so it rises. Energy is transferred by the moving fluid.
- 15. Energy = power X ________
Down
- 1. The rise in the average temperature of the Earth's surface.
- 3. Energy transfer by heating through a material due to collisions between particles.
- 5. An energy resource that cannot be replenished. This resource will eventually run out because we are using it.
- 7. Electromagnetic wave emitted from a hot object.
- 8. Batteries, foods and fuels store energy in their ___________ energy stores.
- 12. The unit of measurement for energy (J). A kilojoule (kJ) is 1000 joules.