The position of switches: open and closed | Science | Quizalize & Oak National Academy

Starter quiz

What is a switch?

a device that produces light

a device that turns electrical appliances on and off ✓

a device in a circuit that produces sound
When a circuit is ______, all of the components are correctly connected and there are no gaps.

'complete' ✓
What does a light sensor do?

controls the brightness of a bulb

reduces the brightness of a bulb

measures the brightness of a bulb ✓
Match the measurement to the unit.

volume of sound

⇔

decibels (dB) ✓

brightness of light

⇔

lux (lx) ✓
How does voltage affect the brightness of a bulb?

increasing the voltage does not affect the brightness of a bulb

increasing the voltage increases the brightness of a bulb ✓

increasing the voltage decreases the brightness of a bulb
How does changing the position of a buzzer in a circuit affect its volume?

changing the position of a buzzer in a circuit makes it quieter

changing the position of a buzzer in a circuit makes it louder

changing the position of a buzzer in a circuit does not affect its volume ✓

______ are used to control circuits.

'Switches' ✓
Would electricity flow around the circuit shown?

yes

no ✓
True or false? Switches for simple circuits can only be bought from shops as they are too complicated to make.

True
False ✓
Switches break a circuit by making a gap in the circuit where ______ cannot flow.

'electricity' ✓
Which of the following happens when a traditional switch is closed?

a conductor and an insulator touch each other

a pair of conductors touch each other ✓

a pair of conductors separate from each other

a conductor and an insulator conductors separate from each other
How are switches on smart phones and tablets triggered?

magnets

human touch ✓

toggles

sound

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Switches play an important role in our lives because they allow us to control the flow of electricity to appliances.
Switches can turn a circuit off by making a gap so electricity cannot flow.
Traditional switches work by making a pair of conductors touch each other or separate from each other.
Engineers have created innovative switches which are sensitive to human touch.
Switches for simple circuits can be created from a range of everyday conductors and insulators.

All electrical appliances and circuits use the same type of switch.

Pupils will be introduced to a wide range of switches.

Switch - A switch is part of an electrical circuit than can stop or allow electricity to flow.
Control - To control something is to manage or determine how it behaves or what it does.
Appliance - An appliance is a device or piece of equipment designed to perform a specific task.
Circuit - An electrical circuit is a closed loop or path that electricity can flow through to make something work.
Complete - A complete electrical circuit is made when all components are connected together correctly and there are no gaps in the circuit.