Science Experiment: Cup Telephone.

Cup Telephone

Equipment:

Cup x2 

Match sticks x2

2 Meter long string 

A pencil or needle

Method:

Step 1 :

Poke a hole in both cups so the string can fit.

Step 2:

Tie the string to both match's at the end (Then put it in the cup)

 Step 3: 

 Have a partner to hold the other side of a cup and you hold the other one.

Step 4:

Make your partner to walk backwards including you and then it will start becoming tight.(Make sure that it doesn't Break and don't go rough with the cup.

Step 5:

Talk into the cup while your partner is his holding the other cup to the ear and you can swap around.

What happens?

You can clearly hear your partner talking.  

 How does this work?

When you talk straight in to the cup it sends vibrations can travels through solid objects like string 

the vibrations of who ever talks go's through the string and it sends right to your partner and then they can just hear what you said.