Solar Water Heater-

Question-

If we use black plastic instead of white to use as a inner coat of the container and put water in it will the black plastic heat faster than white? Covered or uncovered?

Hypothesis-

I think...If the black water heater is in the sun it will then heat the fastest.

Results-

The covered black solar water heater increased four degrees, which was the highest.

Conclusion-

 The black covered water heaters heat water the fastest.

Changes for next Time-

You could make a funnel shape water heater instead of what we used. I think the funnel shaped water heater would heat the fastest  because it might attract more light. 

New Questions-

Would it work better if you had a funnel shape?