Science at key stage 3 (Year 9)
Unit 9I: Energy and electricity
Section 4: b. How does electricity transfer energy?
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Objectives |
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- how to measure voltage in a circuit
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Activities |
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Outcomes |
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Children: |
- Ask pupils to construct simple series circuits incorporating several components and batteries or power supplies of different voltages. Help them to connect the voltmeter across each component in turn, without breaking the circuit. Individual readings can be seen to add to the total voltage. Encourage pupils to associate large voltage changes with large energy transfers by the components,
eg bright bulbs.
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- use a voltmeter correctly
- draw from trends in numerical data conclusions about the way voltage varies around a circuit
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Points to note |
- Emphasise that ammeters measure flow 'through', so are inserted in a circuit; voltmeters measure a 'difference', so are connected across a circuit, without breaking it.
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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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