1. Energy is the ability of a (physical) system to do what? Work answer
2. Name four types of energy? Heat, light, electrical, kinetic (movement), sound, chemical and nuclear fuels answer
3.State the energy changes in a light bulb Electrical light + heat answer
4.What type of energy is stored in food? answer Chemical energy
5. What do kilojoules measure? The energy in food answer
6. What type of energy powers many of the appliances in our homes? Electrical energy answer
7. Calculate the cost of the electricity used by the Boyd family. £80.50 answer Electricity meter reading at the end of June 3479 August 4639 Cost per unit First 150 units cost 20p Remaining units cost 5p
8.Most of our electricity is generated using what type of fuel? answer Coal, oil and gas
9. What is the collective name for the following fuels; coal, oil and gas? answer Fossil fuels
10. When were fossil fuels formed? answer Millions of years ago
11. What was coal formed from? answer Forests / trees
answer 12. What were coal and gas formed from? From sea creatures
13. What is produced when fossil fuels are burnt in a power station? Heat ( which boils the water) answer
14In a power station, what is the function of the generator? Produces electricity answer
15. State the energy change that occurs in an electrical generator. Kinetic (movement) electrical answer
16. Name a gas produced by burning fossil fuels that contributes to the greenhouse effect.. Carbon dioxide answer
17. List three alternative means of generating electricity Solar power, tidal power, geothermal, wind power, hydroelectricity, wave answer
18. What is geothermal power answer Energy from hot material in the earth’s crust.
19. What is hydroelectric power Energy generated by water, held in dams, being released to flow down hillsides. answer
20. What do we call energy that will not run out? renewable energy answer
21. Energy from fossil fuels is non renewable. What does the term non- renewable mean? The fossil fuels will run out. answer
22. State the energy changes that occur in a hairdryer Electrical heat (+ sound +kinetic (movement) + light) answer
23. Scotland is a small country with a large coastline and lots of rain and wind. Suggest one type of alternative energy the country could generate in the future Wind Tidal Hydroelectric answer
24. Energy is used in the home for lighting. Name another use for energy in the home? For example Heating- water, homes, food Sound – radio, TV, Playstation answer
25. State two ways we can reduce energy loss from our homes. Loft insulation Cavity wall insulation, Laying carpets, Lagging pipes, Double glazing Draught excluder on the letter box answer
26. What is global warming Climate change with increasing temperatures answer
27. Name a greenhouse gas, which causes global warming. Example Carbon dioxide Methane answer