These five steps are called the scientific method:

1. Question: What gets hotter in the sun: water in a black cup or water in a white cup?

2. Gather information about the question.

3. Hypothesis: I think that the water in the black cup will get hotter.

4. Testing the hypothesis: Create a test. e.g. Get a black cup and white cup of equal size and     shape. Fill the cups with an equal amount of water of the same temperature. Place them in the     sun for one hour and then measure the water with a thermometer.