This isn't really the right place to ask, but anyway,
Set up an appratus involving a heat absorbing material (such as a piece of metal).
Paint one of the pieces of metal black, and the other one white.
Now place an equal size ice cube (if possible) on both of the pieces of metal under a constant beam of sunlight. Immediately time the experiment and observe the changing conditions under a period of, say 5 minutes.
Of course your experiment should be MUCH more detailed than that, but you should get an idea of what to do.
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