See what happens if you turn the tap to make the water flow faster or slower. Can you also work out how to use the power of the water to raise and lower the Styrofoam cup? You could even try placing a small weight in the bottom of the cup and seeing if the wheel can still make it move.

See if you can think of any other ways that you could use this design. For example, can you adapt your design to bring water to dry land where plants might be growing? (That's called irrigation). You could even try adding moving blades to create a small water turbine, which can generate electricity - what we call hydroelectric power.