Question

_____ change sound vibrations into electromagnetic waves.

Answer 1

Sound waves are gathered by a thin material that vibrates when the sound hits it (microphone) - The material has a magnet attached on the back surrounded by a coil of wire. The magnet vibrates inside the coil and creates a voltage/current in the coil. Wires from the coil are connected to an antenna which is a special shaped conductor. The current moving up & down in the antenna creates EM waves which radiate out into space. This is the basic idea. The actual circuit will have an amplifier to increase the electricity, from the coil, before sending it to the antenna.

Answer 2

so what would go in the blank

Answer 3

cuz mic isnt right

Answer 4

All I can think of is a radio. A microphone will convert sound waves to changes in electrical potential -- but that is not at all the same thing as an electromagnetic wave. In fact, a direct conversion would be very tricky, since the frequency of normal speech (2000 Hz roughly) would correspond to radio waves of immense wavelength, 150 km or so, and I can think of no practical way to generate such enormous waves.

What a radio normally does is take the sound waves and use them to modulate an electromagnetic wave produced by a separate electrical circuit, called an oscillator, so that the sound waves are "carried" by the electromagnetic waves, sort of the way cargo is carried on a ship. But the cargo is not the ship, and the sound waves are in no real sense directly converted to electromagnetic waves.

It is perhaps possible, I think that the person who designed this question does not understand how radios or microphones actually work.

Answer 5

thats not right eaither :/

Answer 6

idk what it is but its not mic or radio

Answer 7

Well, I do hope you've checked that spelling doesn't count, e.g. "mic" might not work but "microphone" might, and I suppose capitalization may be necessary ("Microphone") because you're starting a sentence... Also, there are more general terms for the function described, for example "transducer" is any object that takes vibration of one form and turns it into another.

Answer 8

i know lol

Answer 9

How about a radio transmitter?

Answer 10

tryed it