Cooking with the Sun | Junior Science
Without our blazing Sun, life on Earth would not have been possible. The Sun’s energy reaching our planet Earth is responsible for our warm climate, liquid waters, even our breathable air (by photosynthesis). Humans have come up with genius and inventive ways to harness this renewable and free energy from the Sun.
Burning up with light!
Last week our junior science (P2) kids crafted their very own solar oven using a simple pizza box! A solar oven or cooker is a device that uses direct sunlight to cook, without the use of any fuel and natural gas or coal. After learning about light and the reflective properties of colours, they applied their knowledge and modified their pizza box to absorb and transfer energy from the Sun to the food in the most efficient manner.
The kids painted their boxes black on the outside to maximise the amount to sunlight absorbed since black absorbs all colours of light. In contrast, the kids lined the inner part of their oven with aluminium foil to reflect back as much heat and light back to the food. Check out their creative designs!
Out in the Sun we go!
Metal spoons were placed in the solar oven and was left in the sun for 2 mins. The temperature in the box increased by a whopping 28°C, from 32°C to a peak temperature of 60°C. The spoons were was too hot to grab for long! The kids ended off their experiments by placing an M&M to get delicious drippy chocolate. Make your own solar oven and show us your designs!