Explore how vibrations create sound by engineering your very own instrument! Grab your pail and a few rubber bands or hair ties to get started! How many different sounds can you engineer? Can you adjust the volume and pitch of your instrument? 

	1. Grab your supplies a pail and rubber bands will do the trick! You could also substitute a bowl, hair ties or other similar objects.
	2. If using a pail, remove the handle on each side.
	3. Stretch the rubber band across the pail lengthwise where the handle was attached. Can you adjust the tension (how tight the rubber band is pulled across)? How can you make the rubber band shorter?
	3. Add as many different tensions of bands to your pail as you'd like. How does each length of rubber band sound? How do they sound when you strum them at the same time?
	4. Add water to the pail (almost to the top). When you pluck the rubber bands can you see the vibrations? Does the water ripple and move? How do the ripples change if you pluck the rubber band faster or slower?

Sound is a type of energy made by vibrations. When an object vibrates, it causes movement in surrounding air molecules. These molecules bump into the molecules close to them, causing them to vibrate as well. This makes them bump into more nearby air molecules.

Explore sound with Awesome Rosie Riveters' Intern Dakota! 

Explore Pitch and Frequency in this fun episode of Snack Time Science.