Y8 Energy Revision Crossword

7. An alternative unit for energy.
11. Moving objects store energy in the _______ store.
13. When air particles are heated, they become less ______.
14. Which atomic particle can move freely through a metal?
16. Which element is used as a fuel in nuclear power stations?
17. Food and fuels store energy in the ______ store.
18. The unit of force.
19. The unit for power.
20. Where no particles are present, such as space.
21. The transfer of thermal energy through a type of electromagnetic wave called infrared.
22. An example of a simple machine, such as a seesaw, which is a force multiplier.

1. How thermal energy is transferred through a solid.
2. The measure of energy transferred when a force moves over a distance.
3. A type of non-renewable energy resource such as coal, oil and natural gas.
4. Oil and natural gas are made from the fossilised remains of these sea creatures.
5. When two objects reach the same temperature and no more transfer occurs, the objects are said to be in...
6. The unit for energy.
8. How thermal energy is transferred through fluids.
9. Which types of element are good thermal conductors?
10. The amount of energy transferred per second to an appliance.
12. The measure of the average speed of motion of particles in a substance.
15. Squashed and stretched objects store energy in the _______ store.