The Popcorn Rattles by Katie G.

 

The first thing I did was drink a bottle of Gatorade, and then I washed the bottle.

The next day I started to decorate the bottle with paper and tape.  Next I put popcorn in the bottle. 

You have to shake the bottle to make the sound.  You cannot change sound because of the Dynamics it is only loud. 

The Pitch is only a low Pitch not a high Pitch.  The Timbre Sounds like rain during a thunder storm hitting the rooftop.