Collect the groups of substances: a steel plate and a ceramic plate, a wooden chair and a plastic chair, some sand and some soil, a steel vessel and a glass.
Put all of them in the sun at the same time and leave them for about 15 to 20 minutes.
Observe and feel each pair and compare how hot each one has become.
Discussion
Which one heats faster when all the materials are exposed to the sun together for about 15 to 20 minutes?
What is the effect of the heat on each of these groups?
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