Term 4 Revision Crossword

4. Something humans use to prevent a heat loss problem.
6. What light or shiny surfaces do when they receive radiation.
8. What dark surfaces do when they receive radiation.
10. Something that works well with little waste.
13. Something that can be used instead of a heater to keep warm.
14. A food chain is an example of this type of energy system.
16. The type of potential energy found in a stretched material.
17. The source of energy in an energy flow diagram.
19. The type of potential energy stored in food and fuels.
20. Something that can be done instead of bathing in order to save electricity.
22. Something that can be placed in ceilings to improve energy efficiency.
23. The standard unit of measurement for energy.

1. A type of heat transfer that does not require physical contact or the movement of particles.
2. Energy that is stored.
3. The type of output energy that is not useful to us.
4. The way heat energy is transferred in or between solids.
5. This is measured in degrees Celsius.
7. A type of energy system that involves forces and movement.
9. The type of potential energy stored in an object held above Earth's surface.
11. A kind of current formed by the transfer of heat in a gas or a liquid.
12. Energy resulting from a change of position or a change of state.
15. A type of energy system that involves a flow of charged particles.
18. A type of energy system that involves the transfer of heat energy.
21. The changes we observe at the end of an energy flow diagram.