A switch is part of an electrical circuit than can stop or allow electricity to flow.

Control variables are variables that are kept the same throughout an investigation.

An electrical circuit is a closed loop or path that electricity can flow through to make a component work.

A complete electrical circuit is made when all components are connected together correctly and there are no breaks in the circuit.

An incomplete electrical circuit is made when the components are not connected together correctly or there are breaks in the circuit.

Switches

Science

In this Simple electrical circuits unit, pupils learn to construct a simple series electrical circuit, identifying and naming its basic parts. In the Changing circuits unit, they will build on this knowledge to learn to compare and give reasons for variations in how components function in a simple circuit

In the Everyday materials unit, pupils learnt to identify and name a variety of everyday materials, including wood, plastic, glass and metal. In this Simple electrical circuits unit, pupils will build on this knowledge to recognise some common conductors and insulators, and associate metals with being good conductors

Simple electrical circuits

Physical activity and equipment requiring safe use

Switches can break {{}} by making a space between components where the electricity cannot flow. 

Which of these components could switches turn on and off? 

Switches are used to control many electrical {{}} we use everyday.

What types of switch are shown on this clock radio? 

Who should investigate problems with electricity and electrical appliances? 

Keep a drink near appliances to stay hydrated.

Which of these rules should you follow when using electricity and electrical appliances? 

the wires are both connected to the same end of the cell

the bulb is connected the wrong way round

What do you call an electrical circuit where all the components are correctly connected and there are no gaps in the loop? 

a component which supplies power to a circuit

a component which links other components in a circuit

a component that needs electricity to work and is made for a particular purpose

A. The positive connector is connected closest to the positive end of the cell.

B. The negative connector is connected closest to the positive end of the cell.

C. Both wires are connected to the same end of the cell. 

D. There is no wire connecting the buzzer's negative connector to the cell. 

Which of these circuits won’t work because the buzzer is connected the wrong way?

Content guidance

Risk assessment required - equipment

Adult supervision required

This lesson will be removed by end of Summer Term 2025.

Switches

Lesson outcome

Content guidance

This lesson will be removed by end of Summer Term 2025.