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Science Investigation

Year 6

Electricity

Name: _______________________________ Class: _____________

School: ______________________________ Date: ______________

(2 marks)

A. The two diagrams below show a simple circuit with a switch.

The bulbs in Diagram 1 and Diagram2 are not working.

Explain why.

Diagram 1: ______________________________________________________

Diagram 2: ______________________________________________________

Diagram 1 Diagram 2

B. The diagram below shows a switch in a torch.

In your group, discuss how this switch works.

1. In your own words, explain how this switch works. ______________________________________________________________________________________________________________________

(2 marks)

Battery Metal spring

Metal switch contacts Slide switch

Plastic casing Sealing ring

Lamp contact

Lamp filament

Reflector

ON OFF OFF ON

Total Mark:

20

Percentage:

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(1 mark)

(1 mark)

C. Use the materials provided and follow the teacher’s instructions.

Look at switch A and switch B in the diagrams below.

Build two circuits using switch A in circuit 1 and switch B in circuit 2.

switch A switch B

1. What do you notice in circuit 1?

___________________________________________________________

2. What do you notice in circuit 2?

___________________________________________________________

(2 marks)

3. John needs an alarm to alert him every time someone steps on the front door mat. If he places a switch under the carpet, the alarm would switch on when someone steps on the carpet!

A) Underline the correct answer.

(i) What type of switch would John use? Switch A / Switch B

(ii) Complete the following sentence:

Switch _____ would be more suitable because _________________________

____________________________________________________________

Switch A Switch B

(1 mark)

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D. The diagram below shows a circuit.

(A) (B)

(C)

(D)

End of Investigation

(4 marks)

1. Name the components as labelled in the circuit diagram above.

A) ____________________

B) ____________________

C) ____________________

D) ____________________ (4 marks)

2. Underline the correct answer.

Will electricity flow through the circuit? Yes / No. (1 mark)

3. Give a reason for your answer.

______________________________________________________________

______________________________________________________________

(2 marks)

4. In the box below draw a circuit (using pictures or symbols) to show how a buzzer works. Mark clearly the switch, wires, buzzer and battery.

Total: 20 marks