We explored how energy is transferred among particles in air (or any other material) with the help of some pennies. How can you make three pennies move by only touching one?
One particle collides with another, which creates a chain reaction. In a sound wave, for example, particles do not travel across an entire wave, but rather transfer their energy from one to the next and in doing so transfer the sound.
Ages ago, we explored our growth over the year in blackout poetry.
Here are the final products!