Table of Contents
- 1 Do paper cup telephones work?
- 2 Does talking through a cup and string work?
- 3 How could you stop the sound Travelling in a tin can telephone?
- 4 Does density affect sound?
- 5 Why can you hear your partner speak through the paper cup?
- 6 How are paper cups used to transmit sound?
- 7 Why are paper cups better for the environment?
Do paper cup telephones work?
A string telephone works very much like a landline phone. When you talk into the cup your voice sends sound waves inside the cup, vibrating the bottom of the cup. The sound waves become vibrations inside the second cup, transferring the sound of your voice.
Does talking through a cup and string work?
The key is to make sure that the string is tight between the two cups, and this normally means that the distance is limited and the two people have to be connected to each other by a straight line. But as long as the string is tight, it works. It is also a great way to understand how telephones and radio work.
How do you make a paper cup listening device?
- Learn more.
- Gather your materials.
- Poke a hole in the middle of the bottom of each cup.
- Cut a piece of string at least 5 inches long.
- Tie a paper clip to each end of the string.
- Hand a friend one of the cups.
- Have your friend place their cup over one of their ears while you speak into your cup.
- Fact.
How does sound travel through plastic cups?
Sound waves are created when sounds make vibrations in the air. In this activity, your voice vibrates the air inside the cup, which are then transferred to the bottom of the cup. The bottom of the cup passes the sound waves to the string, and so on to the other cup.
How could you stop the sound Travelling in a tin can telephone?
Make a hole in the bottom of each can with a nail and hammer. String a long piece of string from one can to the other. Tie knots in the ends of the string so the string doesn’t pop out.
Does density affect sound?
Density. The density of a medium is the second factor that affects the speed of sound. If a material is more dense because its molecules are larger, it will transmit sound slower. Sound waves are made up of kinetic energy.
How do you make a homemade walkie talkie with cups?
Here’s what to do:
- Make a hole in the center of the base of both cups, using the pin.
- Tie one paperclip to one end of the string.
- Pull the other end of the string through the hole in one of the paper cups.
- Insert the free end of the string into the hole in the bottom of the second paper cup.
How does sound waves travel from the cup to your ears?
Sound vibrations are funneled into your ear canal by your outer ear (pinna). As the vibrations move into your middle ear, they hit your eardrum and cause it to vibrate as well. The stirrup passes the vibrations into a coiled tube in the inner ear called the cochlea.
Why can you hear your partner speak through the paper cup?
As the bottom of the cup vibrates, it transmits the vibrations into the taut string. The sound travels along the string as a longitudinal wave and ultimately vibrates the bottom of the receiving cup. The cup transmits the sound into the air around the listener’s ear, allowing her to hear the speaker.
How are paper cups used to transmit sound?
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. The string’s vibration as you speak into one of cups is the essence of the operation. As you talk into one cup, the vibration is carried to the other cup.
What are the pros and cons of paper cups?
Paper cups are usually made from trees which are cut down and shredded which is a major disadvantage of paper cups. What are the benefits of paper cups? Paper cups are light weight, will not break when you drop them and can be made from sustainable wood sources like bamboo.
Why are paper cups made out of plastic?
Paper cups are plastic lined, that’s how they stay waterproof and can hold liquid. This affects how and if the paper itself breaks down. It generally isn’t as simple as taking your paper cup and throwing it in your compost. The plastic lining won’t break down so you will have some residual plastic left over.
Why are paper cups better for the environment?
If paper cups are recycled correctly they offer benefits over polystyrene cups which will not break down for 500 years. Paper cups benefit the environment as the paper will break down quicker than plastic or Styrofoam.