Separating a Dry Mixture

In this picture I'm doing an experiment on separating a dry mixture. I am using a screen to separate salt and powder from gravel.

 

Physics Experiment

In this experiment Heather and I dropped a ping pong ball from different heights. Then we recorded the data in microsoft excel, and turned it into a graph. We got to play around with it by making it have different backgrounds. I enjoyed doing this project.