Common questions

Does a string telephone Work with plastic cups?

Does a string telephone Work with plastic cups?

Take a step back in time an make a fun string telephone with your kids and learn how sound travels! To make your own String Telephone, you will need: 2 plastic or paper cups – a tin can works great too. String (you can experiment with different lengths)

What causes sound ks2?

They explain that sound is caused by vibration. If an object vibrates the air particles called molecules close to it vibrate. This makes the molecules next to them vibrate and so on, forming a sound wave. If the sound wave reaches our ears and our brains then we hear the sound.

How does sound travel through a cup and string?

When you talk into the cup your voice sends sound waves inside the cup, vibrating the bottom of the cup. The vibrations are transferred to the string, across the string and into the bottom of the other cup. The sound waves become vibrations inside the second cup, transferring the sound of your voice.

Do cup phones work around corners?

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.

What kind of string do you use for a telephone cup?

Making a Paper Cup Phone A paper cup phone requires two cups, a length of inelastic string, thread or fishing line, two paper clips and a pencil or sewing needle.

What sound does a chicken make in words?

cluck
The sound a chicken makes is a cluck.

How do you hear a sound for Class 3?

How people hear:

  1. Sound waves are sent.
  2. Waves travel through pinna and into ear canal (outer ear).
  3. Eardrum vibrates as sound waves enter the ear canal.
  4. Three tiny bones in the middle ear called the ossicles (Hammer, Anvil and Stirrup) vibrate.
  5. Cochlea transfers sound waves into electrical signals.

What kind of string is best for cup phones?

Suggested Materials

  • Different kinds of cups (paper, plastic, Styrofoam, metal cans, large, small, etc.)
  • Several different kinds of string (cotton, kite string, thread, gimp, dental floss, etc.)
  • Paper clips (100)
  • Scissors.
  • Sharp pencils or small nails (for poking holes in the cups)

    Does a cup and string actually work?

    The old “two cans and a string” technique (or better yet, “two paper cups and a string”) really does 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.

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Ruth Doyle