Science Component: Materials, Hypothesis, Design

Materials:

1. 2 tennis ball cans

2. a pair of scissors

3. 12 inch strip of tape

Hypothesis:

We used Boyle's and Gay Lussac's Gas Laws to predict that a smaller barrel, or volume, and a warm sunny day would produce the best outcome for shooting the Nerf ball a farther distance.

Design:

Our group decided to use internal combustion, meaning we created two separate sections, the barrel and the fuel chamber with a barrier, the cap to the tennis ball can, in between them. We used Boyle's Gas Law to make the volume of the fuel chamber small, creating more pressure. We also poked a few tiny holes into the barrier to magnify the force.