Grades 3 - 5
- Does the angle of the photovoltaic (solar) cell in relation to where the sun is in the sky affect the amount of electricity it produces?
- Which light bulb is the best value for the money?
- How is surface area of a material or liquid related to its heat absorption from the sun?
- How much more heat do incandescent bulbs produce than compact fluorescents?
- How does magnification or concentration of sunlight affect the electrical output of a photovoltaic (solar) cell?
- How does temperature affect the electrical output of a photovoltaic (solar) cell?
- How effective are windshield sun screens at reducing the interior temperature of a closed automobile?
- Which metals are the best conductors of heat?
- How can the energy of the sun be used to cook food?
- Which materials retain solar heat the best after the sunlight is gone?
- Does temperature affect the output current or voltage of a dry cell battery?
- Does a dry cell battery last longer if it used continuously or if it is turned on and off periodically?
- Demonstrate how to use common fruits and vegetables as batteries. How does the voltage and current output vary with the acidity of the fruit/vegetable?
- What is the most effective insulating material? Build a model that can keep ice for 24 hours.
