Hypothesis.
I hypothesise that in this experiment, the design which is
more cone like (model 1) will melt the chocolate successfully and faster
compared to the other designs. This being because when the sunlight shines into
the cone shaped oven, it will reflect off the curved face which will trap
the heat for a longer period of time.
![Picture](/uploads/4/9/0/0/49001631/8627768.jpg?1426403821)
Model 1 Solar Oven