For questions 1 to 8 chose the correct word from the brackets to make each sentence correct.1. (Wood / wind/ electricity) is a fuel2. When a fuel is burned (food/ temperature / energy) is released3. (Coal / wood) is a fossil fuel.4. Fossil fuels were made (hundreds/ thousands/ millions) of years

ago.5. Energy is measured in (metres / joules / newtons)6. Humans get their energy from food such as (sugar / spice / salt)7. Temperature is measured using a (thermistor / thermometer/ joulemeter)8. Fossil fuels were formed from the remains of (living things/ rocks/ sea

water)

Use the temperatures in the box to answer questions 9 to 11. 9. What is the temperature of boiling water ?10. What is the temperature of a healthy person?11. What is the temperature of freezing water?

12. What are the three fossil fuels?

For the next 3 questions, choose from the box three energy sources that are renewable.13. ______________. 14. ______________. 15. ______________.

16. Explain why fossil fuels are also called “non-renewable” energy sources.

17. We get all of our energy from the Sun by different ways. Look carefully at this picture and carefully describe two different ways that the energy from the sun can be used to heat our homes.

18. Describe how coal was formed millions of years ago.

The picture shows part of an experiment you might have done to

37 °C 0 °C 100 °C

-50°C 10°C

wind oil coal solar uranium waves

natural gas

Do not write on this sheet!

compare the energy content in different foods. The next questions are all about this experiment.

19. Why was it important to have the same amount of water in the boiling tube each time a different food was burnt?

20. How would you find out which food gave out the most heat energy? (Choose from the list below) Would you use the one that:

A burned most quickly? B produced the biggest flame? C burned for the longest time? D gave the highest temperature rise of the water?

The table below shows how much energy there is in 100 g portions of various foods.

Food Energy in 100 g (kJ)

bacon 2000bread 1000sugar 1600

Cornflakes 1000carrot 90butter 3000

21. Which food would give the most energy if you ate it?22. How much energy would 300g of Cornflakes give you?23. How much energy would you get if you ate 100g of bacon and 200g of

bread?

Match up the alternative energy sources with their descriptions in the boxes24. Solar power25. Hydroelectric power26. Wind power27. Tidal power28. Biomass energy29. Geothermal power30. Nuclear powerF. Energy from the Sun

is used to heat up water

D. Dams are built across rivers to generate electricity

C. Hot rocks under the ground are used to heat water

G. Large fans are used to generate electricity from the wind

E. The rise and fall of the sea is used to generate electricity

B. Plants are allowed to rot and the gas given off can be burnt

A. The energy in Uranium atoms can be used in a reactor

Now go back and check your work to make sure you haven’t made any silly mistakes.