How To Make Cup Phones
Does yarn work for cup phones? Teach your child how to make a string phone with cups and test how far it works. To use your cup phones the string must be kept taut. When one person whispers in their cup, the other should be able to hear their voice through their own cup. Do you know how to make a paper cup phone? A popular science project for children is to use paper cups, with taut string joining them, to transmit sound. This project demonstrates that sound can travel through the string. Make sure that your phone is facing you. Use a pen or pencil to trace around the base of your phone. When you are done, set your phone aside. Find a paper cup wide enough to fit your iPhone. You will be placing the phone towards the back of the "speaker" so make sure that the base of the cup is...
Paper cup phones work by transmitting sound vibrations over a tightly-pulled string. To create a paper cup phone, poke a hole in the bottom of each of the cups with the pencil or sewing needle and thread each end of the string through each hole. It made you feel like you were getting one over on your parents, while it gave you and your friend a sense of adventure Just because we have actual technology, like virtual phone numbers, that lets us do this much easier, does Let's take a look at how to make an effective cup and string telephone.
