Energy Oskar Sundelin

3. Relating to trade, industry and money.
4. The energy stored when an object has been stretched or compressed.
7. Energy that is not transferred usefully and is lost from a system (to the surroundings). Often described as wasted energy.
8. The energy stored when repelling charges have been pushed closer together or when attracting charges have been pulled further apart.
9. A material that allows electrons to move freely inside it. This means that electrical charge and thermal energy can pass through it easily.
11. The movement of energy from one store to another.
12. The transfer of heat or electricity through a material.
19. Energy cannot be created or destroyed.

1. The increase in length of a material when stretched, measured in metres(m).
2. Any fuel taken from living or recently living organisms.
5. The energy stored in chemical bonds.
6. Relating to morals, right and wrong.
10. An object or group of objects in which the total amount of energy is constant.
13. A way that energy is stored in or by objects due to their motion, position, shape or processes.
14. When a process does not result in a net contribution of carbon dioxide to the atmosphere, for example the burning of biofuels.
15. Useful energy transferred by a device divided by the total energy supplied to the device, or useful power output divided by total power
16. Energy transferred electrically when a charge is moved through a potential difference.
17. A force that resists the movement of two surfaces that are sliding (or trying to slide) across each other.
18. A fuel formed over millions of years from the remains of dead plants and animals. Examples are coal, oil and natural gas.