Randomly ask students about each of the different experiments. If they communicated well with each other, each student should know the answer, or be able to guess at the answer. If necessary, explain the concepts again at this time. To expand this activity or make it more difficult, look up more energy experiments in books and curricula. To simplify this activity, you may choose to conduct the experiments as part of a demonstration and discussion activity.
Solar energy creates electricity using solar cells.
A solar calculator provides an example of this. Using the calculator, make a simple calculation. Then find the solar cells and cover them with your finger for 30 seconds. Keep your finger on the solar cells and try to make the calculation again. Set out an unpainted aluminum pie tin and a second tin, painted with black paint.