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WorksheetsLEDs on micro:bit
Total questions: 15
Worksheet time: 8mins
What does LED stand for?
Luminous Electric Diode
Light Energy Detector
Luminous Electrical Device
Light Emitting Diode
What is the main function of a diode?
Store energy
Produce light
Act as a one-way valve for electricity
Generate heat
How does a diode act as a one-way valve for electricity?
It stores energy
It prevents current from flowing in one direction
It generates heat
It allows current to flow in both directions
What is the by-product of electric current flowing through an LED?
Heat
Light
Sound
Magnetic field
What happens when you connect the positive wire to the positive lead on an LED?
The LED turns on
The LED blinks
The LED turns off
The LED changes color
What is the purpose of the LED on a power adapter?
To charge the adapter
To indicate that the adapter is on and receiving power
To cool down the adapter
To increase the adapter's lifespan
How is an LED used in remote controls?
To improve the remote's grip
To increase the remote's weight
To communicate with the television using light pulses
To emit sound signals
Why can't the human eye see the light emitted by the LED in a remote control?
The light is too bright
The light is in the infrared spectrum
The light is ultraviolet
The light is invisible
What is the advantage of using LEDs as a replacement for regular lightbulbs?
They are heavier
They consume more energy
They provide better illumination
They are cheaper
How many LEDs does the micro bit have on its front?
28
26
25
27
How does the micro bit control the LEDs on its front?
By voice commands
By manual adjustment
By switching pins on and off
By using a remote control
What can you create by controlling the LEDs on the micro bit with code?
A heart image
A sound effect
A vibration pattern
A temperature reading
What does the micro bit processor do to control the LEDs?
It changes the LED colors
It switches pins on and off
It generates heat
It increases the voltage
How can you make the LEDs on the micro bit flash an image on and off?
By dragging a show LEDs block in make code
By clapping
By pressing a button on the micro bit
By shaking the micro bit
What is the main takeaway from the lesson about LEDs?
They can be used for indication, communication, and illumination
They are used for heating purposes
They are only used in remote controls
They are not energy-efficient
