Y9 MB Assess

You would like to build a micro:bit project that provides audio feedback to the user, e.g. a beep or a short tune. Which of the following sentences is true?

• It is not possible to generate audio output with the micro:bit.

• You can use the micro:bit's accelerometer to provide audio feedback.
• You can use the micro:bit's built-in speaker or connect an external speaker to provide audio feedback.
• You can use the micro:bit's camera to provide audio feedback.

Which sensor, built into the micro:bit, would be used in order to detect ‘gestures’, such as shaking or titling?

• gyroscope
• infrared sensor
• temperature sensor
• accelerometer

 The LED is supposed to be controlled (turned on or off) using pin 0. The arrow shows that one of the crocodile clips has not been connected to a pin. Which pin should it be connected to?

• Power (3V)

• Ground (GND)

• 2

• 1

In Figure 1, you are supposed to use pin 0 to control the LED (turn it on or off). Which piece of code would you use to turn the LED on, assuming the wiring is correct?

• pin0 = 1

• pin0.read_digital() == 1

• pin0.write_digital(1)

When the Program is executed, what will the user see on the micro:bit display after button A has been pressed once?

• 1

• >

• nothing

• display.show

When the Program is executed, what will the user see on the micro:bit display after button A has been pressed twice?

• 1

• 0

• -1

• >

When will line 7 of Program 1 be executed?

• never

• 1. executed once, after button A has been pressed twice.

• 1.  executed every time button A is pressed.

• executed constantly, i.e. in every round of the while loop.

What does this line of code do:

display.set_pixel(x, y, 0)

• It sets the pixel at coordinates (x, y) to the color 0.
• It changes the pixel color to black at coordinates (x, y).
• It increases the brightness of the pixel at coordinates (x, y) to 0.
• It turns off the pixel at coordinates (x, y).

What is the purpose of the following Python code?

• It displays a sad face on the micro:bit.

• It displays a happy face on the micro:bit when it is tilted face up.

• It displays a happy face on the micro:bit continuously.

• It displays a happy face on the micro:bit when it is tilted face down.

Which function from the micro:bit library is used to detect whether the micro:bit is tilted face up?

• accelerometer.is_gesture('upside down')
• accelerometer.is_gesture('facing up')
• accelerometer.is_gesture('face up')
• accelerometer.is_gesture('tilted up')