2. 1111 2222 3333 4444 5555 6666 7777 8888 9999 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

3. 1. Energy is the ability of a (physical) system to do what? Work answer

4. 2. Name four types of energy? Heat, light, electrical, kinetic (movement), sound, chemical and nuclear fuels answer

5. 3.State the energy changes in a light bulb Electrical light + heat answer

6. 4.What type of energy is stored in food? answer Chemical energy

7. 5. What do kilojoules measure? The energy in food answer

8. 6. What type of energy powers many of the appliances in our homes? Electrical energy answer

9. 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

10. 8.Most of our electricity is generated using what type of fuel? answer Coal, oil and gas

11. 9. What is the collective name for the following fuels; coal, oil and gas? answer Fossil fuels

12. 10. When were fossil fuels formed? answer Millions of years ago

13. 11. What was coal formed from? answer Forests / trees

14. answer 12. What were coal and gas formed from? From sea creatures

15. 13. What is produced when fossil fuels are burnt in a power station? Heat ( which boils the water) answer

16. 14In a power station, what is the function of the generator? Produces electricity answer

17. 15. State the energy change that occurs in an electrical generator. Kinetic (movement) electrical answer

18. 16. Name a gas produced by burning fossil fuels that contributes to the greenhouse effect.. Carbon dioxide answer

19. 17. List three alternative means of generating electricity Solar power, tidal power, geothermal, wind power, hydroelectricity, wave answer

20. 18. What is geothermal power answer Energy from hot material in the earth’s crust.

21. 19. What is hydroelectric power Energy generated by water, held in dams, being released to flow down hillsides. answer

22. 20. What do we call energy that will not run out? renewable energy answer

23. 21. Energy from fossil fuels is non renewable. What does the term non- renewable mean? The fossil fuels will run out. answer

24. 22. State the energy changes that occur in a hairdryer Electrical heat (+ sound +kinetic (movement) + light) answer

25. 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

26. 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

27. 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

28. 26. What is global warming Climate change with increasing temperatures answer

29. 27. Name a greenhouse gas, which causes global warming. Example Carbon dioxide Methane answer