Pitch Perfect!

Have you ever wondered why some sound is sharper (higher) ? Like babies' screaming. 

Some sounds are lower like the beating of the drums. 

Watch this video below and find out why. 

CLICK HERE

Here is a classic experiment for you to explore different pitches. 

1) Get some glasses out. Carefully tap them with a spoon to listen for the pitch. 

2) Try filling them in with different amount of water. Tap them again. 

What do you realise?  What happens to the pitch when the water level is high? 

3) Go crazy and make a song!