Ask the students to carry out the activity from the worksheet then go over their results at the end of the class. Use students results to complete the temperature change graph on the blackboard. Questions and solutions 1. Use student's results. Use student's results.
Land heats quicker than water during the day and cools quicker than water when sunlight is absent.
Let's say you wanted to build a house that will store the energy of the sun in its walls so that it was warm during the night. The best thing to use is water. You could fill large clear glass containers such as bottles, with water and use them like bricks to make your wall. Water will retain the sun's energy longer and keep the house warmer during the night. Use your graph to try to predict how long it would have taken the sand and the water to cool to their original temperatures.