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Making a simple telephone
Alexander Graham Bell invented the telephone( )
Two main parts of a telephonereceiver (collects incoming sounds) microphone (sends sounds down a wire)
How does a telephone work?The microphone changes sound waves to electrical signals and pass them down the phone. How does a telephone work?
How does a telephone work?The electrical signals are changed back to sound waves and are collected by the receiver. How does a telephone work?
A simple telephone microphone (sends sounds down a wire) receiver(collects sounds)
How does a paper cup telephone work?Sound waves travel from one cup (microphone) to another (receiver) through the string (object).
How to make a paper cup telephone?You will need: 2 paper cups Some string
Steps Make a hole in the bottom of each paper cup. Put the string into the hole. Tie a knot so that the string doesn’t come out from the cup.
best listening quality.Reminder You have to keep the string straight for best listening quality.
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