Input and Out Devices Lesson 5

What is the primary purpose of sensors in technology?

• To enhance the appearance of devices
• To measure and respond to physical properties
• To reduce the cost of production
• To increase battery life

What property does an acoustic sensor measure?

• Light intensity
• Temperature
• Sound intensity
• Pressure

What is a unique application of an accelerometer?

• Measuring temperature
• Determining orientation in smartphones
• Detecting gas levels
• Monitoring soil moisture

In what device are flow sensors commonly used?

• Smartphones
• Chemical plants
• Greenhouses
• Burglar alarm systems

What is a typical use of gas sensors?

• Measuring noise levels
• Monitoring CO2/O2 levels
• Checking battery life
• Detecting light changes

What does a humidity sensor measure?

• Acidity levels
• Moisture content in the air
• Speed of an object
• Temperature variations

Which sensor type is used to monitor the amount of fuel in a car?

• Pressure sensor
• Gas sensor
• Level sensor
• Moisture sensor

An infrared sensor is commonly used for:

• Measuring sound intensity
• Detecting movement and heat
• Both A and B
• None of the above

What does a light sensor do?

• Measures temperature
• Detects light intensity
• Monitors sound levels
• Measures pressure

What is the purpose of a magnetic field sensor in smartphones?

• To detect temperature
• To determine the direction the phone is pointing
• To measure speed
• To monitor battery levels