Digital Balance, Level Detector, Step Counter

What is the main function of an accelerometer?

• To measure temperature changes

• 
  To measure acceleration forces in the x, y, and z axes.

• 
  To calculate wind speed

• 
  To detect sound frequencies

How does an accelerometer measure acceleration?

• 
  It relies on external temperature changes

• 
  Internal sensors detect changes in velocity caused by acceleration.

• 
  It measures the force exerted on the device

• 
  It calculates the distance traveled by the device

What are the axes along which an accelerometer can measure acceleration?

• 
  B-axis

• 
  A-axis

• 
  X-axis, Y-axis, Z-axis

• 
  C-axis

Give an example of an application where accelerometers are commonly used.

• Smartphones, gaming controllers, fitness trackers

• 
  Refrigerators

• 
  Microwaves

• 
  Washing machines

What is the purpose of the acceleration (mg) x block in the code?

• To measure the tilt along the y-axis

• To measure the tilt along the x-axis

• To control the brightness of the LEDs

• To check the battery level

Which condition triggers the display of an arrow pointing right?

• When the acceleration (mg) x is greater than 100

• When the acceleration (mg) x is less than -100

• When no condition is met

• When the acceleration (mg) x equals 0

What variables are being used to store the acceleration values in the x and y directions?

• a and b

• x and y

• axis_x and axis_y

• accel_x and accel_y

What does the final else block represent in this level detector?

• The microbit is tilted.

• The microbit is in a flat and balanced position

• The microbit is moving rapidly.

• The microbit is not detecting any movement.

What values are initially set in the on start block?

• Both Distance travelled and steps are set to 100

• Both Distance travelled and steps are set to 0

• Only steps is set to 0

• Only Distance travelled is set to 1500

What does the code do when the acceleration strength exceeds 1500 mg?

• Resets the step count to 0

• Increases the step count by 1

• Displays the total distance traveled

• Stops the step counter