Primary school science week

It is Primary school science week and Rm42 just went to the science lab and done some experiments My favourite Ring in my ears here it is and what it is.

Equipment 
 spoon
35cm string

Method 
Step 1. Grab the spoon and string and tie the string to the spoon ( There should be two pace of string coming of the end of the spoon )  
Step 2. And then make two loops at the end of the string.
Step 3. Put your index fingers thew the two loops.
Step 4. Then put your fingers in your ears.
Step 5. Last you hit the spoon against the edge of the table and you will see what will happen