As part of our Science unit, Forces, we took part in an experiment, measuring how much water resistance is acting on different shapes. 

To ensure our experiment was fair, we had to keep some variables the same: the weight of the objects, the height the object was dropped from, the amount of water the object had to travel through, the person timing and the person dropping the shape. 

The main variable we changed was the shape itself. We chose to drop a sphere, cylinder and cube.