final lessons

Which of the following is true about the difference between internal and external components?

• Internal components are built into the Micro:bit, while external components are not.

• internal components are more powerful than external components

• Internal components are more expensive than external components.

• Internal components help the Micro:Bit to do more projects while external components do not.

What is the purpose of the 3V pin on the Micro:bit?

• To supply power to the Micro:bit

• To power external components.

• To control the brightness of LEDs.

• To send and receive data wirelessly.

Which of the following is not an external component of the Micro:bit?

• Green and orange external LEDs

• Touch pads.

• Press buttons.

• The music board

How fast do the LEDs blink in a police light system?

• It depends on the length of the “wait” block

• 500 milliseconds

• 1 second

• 2 seconds

What is the purpose of the “wait” block?

• To determine how long the LEDs will be on

• To turn the LEDs on and off

• To set the pins for the LED

• To complete the circuit

How many LEDs are required to build a police light system?

• One

• Two

• Three

• Four

What is the purpose of a traffic light?

• To direct pedestrians on the sidewalk

• To direct cars on the road

• To signal when a train is approaching

• To light up the streets at night

What is the purpose of resistors in a traffic light simulation?

• To increase the brightness of the LEDs

• To decrease the brightness of the LEDs

• To prevent the LEDs from burning out

• To the provide the point of connection between the LEDs and the Micro:Bit

Which colour on a traffic light should be the shortest?

• Green

• Orange

• Red

• Green and orange are the shortest

Which component is the most important in a traffic light system?

• A Red LED

• A Micro:bit

• A Power supply

• A Green LED