Across
- 6. Instrument used to measure temperature.
- 11. The unit of energy used by electricity companies, symbol kWh.
- 14. Energy resources whose supply will not run out.
- 21. Energy cannot be created or destroyed, only transferred.
- 22. 1 kilowatt = 1000 W, symbol kW.
- 24. 1 kilojoule = 1000 J, symbol kJ.
- 27. current The movement of heated liquids or gasses.
- 28. The transfer of energy as a wave.
- 30. Objects are at thermal equilibrium when they are at the same temperature.
- 31. Energy of moving objects.
Down
- 1. A material that conducts charge or energy well, such as a metal or graphite.
- 2. Energy that has become spread out or ‘wasted’ by heating the environment.
- 3. Energy due to the position of an object in a gravitational field.
- 4. Energy stored in food and fuels.
- 5. Coal, oil, and gas made from the remains of trees and sea creatures over millions of years.
- 7. store Energy stored when objects change shape
- 8. The unit of power, symbol W.
- 9. A way in which energy is transferred through solids, and to a much lesser extent in liquids and gases.
- 10. The transfer of energy by the movement of gases or liquids.
- 12. Energy resources that have a limited supply.
- 13. Energy in objects as a result of the motion of their particles.
- 15. Something such as a food or hot object that enables you to account for the energy at the start and end of a transfer.
- 16. The unit of energy, symbol J.
- 17. A rotating lever that reduces the force required to do work.
- 18. A simple machine that multiplies the force.
- 19. A way of transferring energy that does not involve heating.
- 20. The number in watts or kilowatts that tells you the rate at which an appliance transfers energy.
- 23. A material that does not conduct electricity or transfer energy well.
- 25. Materials or mechanisms for heating or generating electricity.
- 26. Associated with changes in temperature or with work.
- 29. Radiation given off by the Sun and other objects that brings about energy transfer.