I n the Solar Energy module, students observe the changes in shadows over a day and relate the position of the Sun to the shadows. They make and use a shadow tracker to systematically monitor the position of the Sun.
Students then investigate ways to capture solar energy to heat water in containers and zip bags.
They investigate color, surface area of the collector, and a cover on the heater. They establish relationships between the variables in the solar water heater and the rate of temperature increase. Finally, students are challenged to discover the most effective way to heat a house with solar energy. They assemble a cardboard house and investigate variables of window orientation, interior color, heat sink, and insulation. They establish a relationship between the variables in a solar house and the efficiency of heating.