Year Five has been doing the topic ‘Enough for Everyone’ in Geography. When we did the pizza box solar oven experiment, we were focusing on renewable and non-renewable power sources. We also made a filter for water when focusing on the water filtering process.
Making a pizza box oven
We cut an empty pizza box so that it flapped up and down like a lid. We then covered the inner side of the flap with aluminium foil and glue so that it would reflect rays from the sun. We cut out a black piece of paper to fit the bottom of the box to absorb heat. This is where the egg would be cooked. We then scrunched up balls of newspaper and we placed them on the bottom of the box.
Next, we used clear plastic to create an airtight window for sunlight to enter the box. We did this by taping a double layer of plastic wrap all around the box securely. It is best to set up your solar oven when the sun is high overhead, from 11am to 3pm. We took it outside and adjusted the flap so that the most sunlight possible was reflecting off the aluminium foil and onto the plastic-covered window. We used a ruler to prop the flap at the best angle. The egg was cooked but the layer on top was a bit watery.