Year 8 Energy

2. Material that encourages heat transfer. E.g. metal.
5. The Law of Conservation of Energy states that energy cannot be created nor ___________.
6. A type of heat transfer involving the movement of warm particles in a cyclical motion.
11. Any energy that is stored. (2 words)
12. A unit of measurement for energy, can be written as J.
14. One thousand joules, can be written as Kj.
17. The type of potential energy stored in the nucleus of an atom. When released, it can be used to generate electricity.
18. The type of potential energy that ball has before it is dropped.
19. A measure of how much energy an appliance uses for its intended purpose (is not 'wasted' by being converted to forms of energy we don't want). Usually expressed as a percentage.
20. The type of potential energy in a wound-up spring.
23. A type of heat transfer where heat spreads outward in waves from an object that is hot.

1. The most important example of energy transformation on Earth, where light energy from the sun is concerted into chemical energy by plants.
3. Can be used to compare the energy efficiency of different appliances. (2 words)
4. A type of heat transfer where heat moves directly between two objects that are touching.
7. A cheetah has more of this type of energy when it runs than a snail.
8. When kinetic energy of wind has been converted into electricity by a wind turbine, we say it has been __________.
9. The type of potential energy within a substance such as fuel or food that can be released when the substance is burnt or digested.
10. Material that slows heat transfer. E.g. wool.
13. The energy that one object transfers to another to warm it up.
15. Energy that causes charged particles to move. It can move through a circuit.
16. When energy is moved from one place to another.
21. Energy carried when particles vibrate, causing waves of compressions.
22. Energy that moves in waves and is the only type of energy that we can directly see.