Speakers with the micro:bit

What are headphones?

• Small speakers that sit outside or inside of our ears

• Large speakers used in home theater sound systems

• Microphones used for recording music

• Amplifiers for increasing electric current

What is the purpose of a voice coil in a speaker?

• To create pressure waves in the air

• To move independently in and out of the magnets hole

• To increase the amount of current going out to other devices

• To hold the diaphragm in place

What creates pressure waves in the air to produce sound in a speaker?

• Rapid back and forth motion of the voice coil

• The flexible suspension material

• The cone of paper, wood, plastic, or metal

• The permanent magnet

What is the role of an amplifier in a speaker system?

• To increase the amount of current going out to other devices like speakers

• To move the diaphragm back and forth

• To create pressure waves in the air

• To hold the voice coil in place

How can you play a song using a micro bit and headphones?

• Connect an alligator wire to the ground pin and another to pin zero

• Connect an alligator wire to the ground pin and another to the 3.5mm audio jack

• Connect an alligator wire to the power pin and another to the USB port

• Connect an alligator wire to the ground pin and another to the HDMI port

What happens when you press button A on the micro bit instrument?

• Plays a middle G note

• Plays a middle E note

• Stops the music

• Increases the volume

What is the function of the spider in a speaker?

• To create pressure waves in the air

• To move the diaphragm back and forth

• To increase the amount of current going out to other devices

• To hold the voice coil in place

What is the purpose of the cone in a speaker?

• To create a sort of diaphragm

• To hold the diaphragm in place

• To move independently in and out of the magnets hole

• To increase the amount of current going out to other devices

How does a speaker create sound?

• By creating pressure waves in the air through the diaphragm vibration

• By holding the voice coil in place

• By increasing the amount of current going out to other devices

• By moving the diaphragm back and forth rapidly

What is the role of the diaphragm in a speaker?

• To vibrate and create pressure waves in the air

• To hold the voice coil in place

• To move independently in and out of the magnets hole

• To increase the amount of current going out to other devices