Quiz on Sensor Types

Which type of sensor is commonly used in smartphones to detect the phone's orientation (whether it's upright or sideways)?

• Temperature sensor

• Light sensor

• Accelerometer

• Humidity sensor

A motion sensor is often used in security systems. What does it detect?

• Changes in light

• The movement of people or objects

• The temperature of the room

• The amount of water in the air

What type of sensor is used in automatic streetlights to turn on when it gets dark?

• Gas sensor

• Light sensor

• Sound sensor

• Moisture sensor

A temperature sensor can be found in which of the following devices?

• A refrigerator

• A TV remote

• A bicycle

• A washing machine

What type of sensor is used in touchscreens on smartphones and tablets?

• Pressure sensor

• Sound sensor

• Touch sensor

• Gas sensor

A heart rate sensor is used in fitness trackers to measure your heartbeats per minute.

• True

• False

Carbon monoxide sensors are important in homes because they detect dangerous levels of a harmful gas.

• True

• False

Sound sensors are used in voice-activated devices like smart speakers to detect voice commands.

• True

• False

List three types of sensors you see in everyday life and explain what each one does.

Answer explanation

Light sensor: Used in automatic streetlights, it detects the amount of sunlight and turns the lights on when it's dark.

Motion sensor: Found in security systems, it detects movement and alerts homeowners if there's unexpected motion.

Touch sensor: Found in smartphones, it detects when you touch the screen to interact with apps and functions

Why are sensors important in our daily lives? Write 2-3 sentences explaining how sensors improve convenience and safety.

Answer explanation

Sensors make our lives easier by automating everyday tasks, like turning on lights when it gets dark or adjusting the temperature in a smart thermostat. They also improve safety, like smoke detectors and carbon monoxide sensors, which alert us to dangerous situations.