Science at key stage 3 (Year 7)
Unit 7I: Energy resources
Section 3: c. Why are fuels useful?
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Objectives |
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- to consider factors involved in making a fair comparison between different fuels
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Activities |
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Outcomes |
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Children: |
- Ask for examples of uses of different fuels. Discuss with pupils how to carry out a fair test of which is the best fuel,
eg liquid fuels (alcohols) in 'spirit burners', or solid fuels for camping stoves. Burn the fuel and record the temperature rise of water as a cooperative whole-class demonstration. Ask pupils to discuss how good they think the results are. Encourage pupils to consider factors which have not been controlled that may affect the results, and to consider possible errors of measurements.
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- produce a chart which shows temperature rise from a range of fuels
- describe how to improve accuracy by repeating readings or by controlling variables more carefully
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Points to note |
- Discuss the hazards and precautions with the class. They will have the opportunity to plan and carry out a similar comparison, for foods, later in the unit.
Safety
- employer's risk assessments on the use of fuels should be followed. Eye protection should be worn. Small quantities should be used, and kept clear of stock supplies. Do not allow unsupervised use of fuels. Do not use petrol
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This unit is divided into sections. Each section contains a sequence of
activities with related objectives and outcomes. You can view this unit by
moving through the sections or print/download the whole unit.
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