Input Devices and Sensors Quiz GRADE 7

This device is used to output sound

• Digital Camera

• Speaker

• Microphone

• Mixer

What type of input device records sound in an analog format?

• Keyboard

• Digital Camera

• Mouse

• Microphone

How do 3D printers work?

• They melt plastic filament and build layer by layer.

• They use magnetic fields to mold metal objects.

• They use lasers to cut materials into desired shapes.

• They assemble parts using tiny robotic arms.

What device measures the heat generated by an object or system?

• Temperature sensors

• Gas Sensors

• Humidity sensors

• PH Sensors

What needs to be done to the sound file in a speaker?

• Converted from digital to analogue

• No conversion needed

• Converted from analogue to digital

• Enhanced with special effects

Which device captures images using a sensor called a charge coupled device (CCD)?

• Smartphone

• Touchscreen

• Digital Camera

• Microphone

Which device can be utilized in a nuclear energy plant to detect potentially critical gases?

• Magnetic field Sensors

• Motion sensors

• Light Sensors

• PH Sensors

What type of device is a computer printer?

• OUTPUT

• CPU

• INPUT

• HARDWARE

Which device detects the ambient light level?

• Light Sensors

• Gas Sensors

• Humidity Sensors

• Motion Sensors

How do actuators work?

• They generate heat to regulate temperature.

• They emit light to indicate status.

• They convert electrical signals into mechanical motion.

• They measure pressure in a system.