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WorksheetsUltrasonic and Servo Motor Quiz
Total questions: 20
Worksheet time: 10mins
What does an ultrasonic sensor measure?
Light
Sound
Distance
Temperature
Ultrasonic sensors measure distance using:
Light waves
Radio waves
Heat
Sound waves
The distance measured by an ultrasonic sensor is usually in:
Volts
Seconds
Centimeters
Pixels
What happens when an object comes closer to the ultrasonic sensor?
Distance value increases
Distance value decreases
Micro:bit stops
LED turns off always
Which project commonly uses an ultrasonic sensor?
Smart dustbin
Music player
Calculator
Stopwatch
What does a servo motor do?
Measures distance
Rotates to a specific angle
Plays music
Shows numbers
Servo motors usually rotate between:
0° to 90°
0° to 180°
0° to 360°
90° to 360°
Which block is used to control a servo motor angle?
show icon
play tone
set servo angle
pause
Servo motors are best used in:
Fans
Robots arms
Bulbs
Buzzers
In a smart gate project, a servo motor is used to:
Measure distance
Play music
Open and close the gate
Show LED pattern
What does the LED block do in Micro:bit?
Plays sound
Controls motor speed
Displays light or icons
Measures temperature
Which block shows a heart on the Micro:bit display?
play melody
show icon
set servo angle
forever
LEDs on the Micro:bit are arranged in:
3×3 grid
4×4 grid
5×5 grid
6×6 grid
LEDs are mainly used to:
Store data
Show output visually
Increase speed
Control Wi-Fi
Music blocks are used to:
Rotate motors
Measure distance
Play sound or tones
Show text
Which block plays sound in MakeCode?
show string
play tone
set servo
on start
Music blocks need which component to hear sound?
LED
Servo
Speaker or buzzer
Sensor
Playing music can be used as:
Input
Output
Sensor
Storage
If distance is less than 10 cm, which action is BEST?
Turn off Micro:bit
Play music and turn LED ON
Do nothing
Reset program
Which block is used to make decisions in Micro:bit?
forever
pause
if–else
show icon
