Started by a School Science Teacher
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Solar Race Car

Build a solar-powered race car!
Manufacturer: OWI


ZOOOOOOMM! Super Solar Racing Car has surprising speed. In fact, you might catch yourself saying, “Woo Wee that little sucker must be super charged with one of those fancy high performance engines.” If you did, in fact, think such a thought, you are partly correct. One source of such power is derived from the sun’s powerful rays of light. Thank goodness you can control this speedster from any dangerous mishaps by shielding its power source and immediately depressing its brakes to stop. Super Solar Racing Car is easy to assemble and demonstrates alternative energy principles. No batteries and tools required and less than a dozen parts to assemble. SPECIFICATIONS Solar Panel Output : 1.1V x 50mA Assembled Size : 55mm x 41.8mm x 14mm Unit Weight : 8.6g Solar Cell Life : 2 yrs in normal use Motor : DC Power Consumption : 1.2V x 10mA No Batteries Required

What are Photovoltaic Cells Made From?

Silicon is the major material in the cells. Pure silicon crystals are poor conductors of electricity. Other elements are added to the silicon, such as, phosphorus and boron. When the energy from the sun hits the cell, the electrons in the elements begin to move around. The sun causes the panel to have a positive and negative side. This electrical difference causes electrons to flow through a diode.

What Factors Affect the Production of a Solar Cell?

The factors that most affect the production of a solar cells are the angle of the panel in relation to the sun, the peak wattage, the light intensity and the hours of sun exposure.

How is Wattage (or Power) Calculated?

The formula for power is   Power=Current X Voltage. Power is measured in watts, current in amperes and voltage in volts.

The Solar Science Kit has a small motor, photovoltaic cell and disc that works well in demonstrating this in a classroom or home setting.

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