1. P1a revision mega crossword
2. The number of Joules a 100 Watt bulb transfers in 10 seconds
5. These materials are good conductors of heat
6. What we call poor conductors
8. The time it takes for an energy saving improvement to pay for itself
12. Energy of moving electrons
13. Growing crops to make fuels
16. The unit of energy
17. What most appliances produce, which is wasted energy
19. Turns kinetic energy into electrical energy
20. Energy from the Earth’s hot rocks
27. Fossil fuels produce this greenhouse gas (6,6)
29. A unit of electrical energy used for bills (8-4)
30. The ratio of useful energy to total input energy
32. Oil, coal and gas (6,5)
34. Network of cables and power stations to supply electricity to
homes and businesses (8,4)
36. The % efficiency of a 60W light bulb that produces 6W of light energy
38. This type of energy source will never run out
39. Movement energy
40. Any energy source that is available all the time
42. Heat transfer through particles in contact
46. Energy an object has due its height
Down
1. Energy stored in fuels and food
3. These cells convert sunlight to electricity
4. Changes the voltage of electricity
7. The number of Joules a 60 Watt light bulb transfers in 1 second
9. The heart of a nuclear power station
10. What metals have that make them good conductors (4,9)
11. Heat transfer in fluids due to less dense material rising
14. Also called elastic energy
15. Energy which is not useful
17. Producing electricity from falling water
18. The speed with which energy is transferred
21. Heat transferred by infra-red waves
22. A liquid or a gas
23. To change energy from one type to another or others
24. C______ of energy means none can be created or destroyed
…… more down
25. Particles vibrate faster as this increases
26. The unit of power, 1 Joule per second
28. Energy from the sea’s movement due to the wind
31. 1,000 Watts
32. The number of units used by a 8kW shower used for 30 minutes
33. Type of transformer that increases voltage (4-2)
35. This reduces when a material gets hotter and leads to convection
37. Power form convection currents in the air
41. What materials do when they get hotter
43. Energy stored in the central part of atoms
44. The fuel for nuclear power stations
45. A device with blades that can be turned by air, steam or water