The Science Behind the Solar Oven
Solar ovens use heat emitted from the sun, called solar energy, to cook food. The foil reflects sunlight into the box, and the plastic wrap acts like a greenhouse by preventing the heated air inside the box from escaping. As more heat from the sun streams into the box, the air inside gradually becomes warmer. The black paper in the bottom of the box absorbs the warm sunlight, which in turn heats the food placed on top of it.
• What other items can you cook in the solar oven? Could you bake a potato or even a pizza?
• Does changing the angle of the reflector flap change how efficient the solar oven is at cooking?
• Try using the oven on a warm but cloudy day. Does it still cook the cookies? Why do you think that is? +
Solar Cookie Oven
Extracted from The Kitchen Science Cookbook by Dr Michelle Dickinson (Nanogirl Labs Ltd, $49.99). Photography by Magic Rabbit Ltd. Find out more about Nanogirl Labs at nanogirllabs.com.