Light Sensor on micro:bit

What is the purpose of a night light according to the text?

• To keep monsters away

• To create a spooky atmosphere

• To provide a small amount of illumination

• To increase electricity consumption

How does a night light turn on when the room gets dim enough?

• By using a motion sensor

• By detecting the amount of light with a light sensor

• By making a loud noise

• By using a timer

What type of material is a semiconductor?

• Insulator

• Conductor

• None of the above

• Both conductor and insulator

What happens when n-type and p-type materials are joined together in an LED?

• They cancel each other out

• They become insulators

• They form a depletion region

• They create light

How does an LED detect light?

• By emitting light

• By producing current when light shines on it

• By changing color

• By absorbing light

What is the purpose of the capacitance meter connected to an LED?

• To measure the temperature

• To measure the sound level

• To measure the light level

• To measure the humidity

What happens to the capacitance value when light is shone on the LED?

• It fluctuates

• It decreases

• It remains the same

• It increases

What does the micro bit measure when asked to measure the light level?

• Current

• Resistance

• Capacitance

• Voltage

What does a reading variable store in the micro bit program?

• Pressure value

• Temperature value

• Humidity value

• Light level value

What does the LED bar graph on the micro bit indicate?

• Humidity

• Pressure

• Light level

• Temperature