Electrical sensors: design (non-statutory) | Science | Quizalize & Oak National Academy

Starter quiz

Which of these devices is able to create or close a gap in a circuit?

buzzers

switches ✓

motors

bulbs
Which of these are types of switches?

flipper

toggle ✓

slider ✓

round
What component is shown in this image?

'motor' ✓
Which of these materials could act as an electrical conductor in a switch?

paper

copper ✓

plastic

silver ✓
Switches control circuits by making a space between ______ where electricity cannot flow.

'components' ✓
What type of switch is this?

slider

push-button

toggle ✓

reed

Exit quiz

What is the name for a device which detects changes in things like light, temperature, motion, sound or pressure?

camera

newton meter

data logger

sensor ✓
Sensors are used in everyday electrical ______ such as washing machines, lights, burglar and fire alarms.

'appliances' ✓
What does a motion sensor detect?

movement ✓

light

pressure

heat
What type of sensor detects liquid?

light

pressure

moisture ✓

temperature
Strict safety rules must be followed when you use electrical components near which of these?

bright light

loud noise

water ✓

low voltage
Which type of professionals begin their ideas on paper and in the laboratory, then design and test them to build things that matter and make our lives easier.

mechanic

doctor

engineer ✓

electrcian

cleaner

Worksheet

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Presentation

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Video

Lesson Details

Key learning points

There are sensors all around us to detect changes in things like temperature, motion, moisture, light, distance etc.
Sensors are used in everyday appliances such as washing machines, lights, burglar and fire alarms.
Strict safety rules must be followed when planning to use electrical components near water.
Engineers generate ideas to invent, design, and build objects that matter.

Common misconception

For safety reasons, electrical circuits are never used in systems or appliances which involve the use of or are used near water.

Slides will discuss how engineers plan for the safe use of some electrical appliances near or with water. Pupils will design their own circuit to be used near water.

Keywords

Switch - A switch is part of an electrical circuit that can stop or allow electricity to flow.
Circuit - An electrical circuit is a closed loop or path that electricity can flow around to make an appliance work.
Sensor - A sensor is a device that can detect and monitor changes.
Detect - To detect something is to discover or notice it.
Design - To design something is to make a plan and a drawing describing how it could be built.