How do boomwhackers form pitches?

Boomwhackers are made from different peices of wood, plastic, or other materials. These are cut into different sizes, normally by length. These lengths determine the piches the boomwhacker makes; a shorter boomwhacker will make a higher pitch than one that is longer, which makes a lower pitch. When you hit the boomwhacker, the acoustics in the longer tubes vibrate longer, making the pitch deeper. The acoustics in the shorter tubes vibrate for a shorter time, making the pitch higher.