February 12 Solar Oven Project Design Day Drill

February 12 Solar Oven Project Design Day

Drill 1. What is the change in length of a 2. 00 -m copper pipe if its temperature is raised from 23°C to 978°C? 2. Make a prediction: Which object absorbs heat better: a silver object, a black object, or a white object? Explain.

Solar Oven Project https: //www. youtube. com/watch? v=dg_DOM 1 OQoo&t=3 s Light energy (sun) is converted into thermal energy (radiation) to heat the Earth. Other examples of this process – greenhouse, car with its windows up, or… a Solar Oven.

Solar Oven Project We can trap the energy from the sun, retain thermal energy, and raise the temperature of the air inside high enough to cook food. Based on your prediction for the material that will absorb heat the best (silver, black, or white), which material do you think will be most effective to use inside a solar oven?

Test your Prediction Make a data chart in your notes. • Air Temperature in Room (o. C) • Black solar oven (o. C) • White solar oven (o. C) • Aluminum foil solar oven (o. C) While we are waiting for the results, read the article on solar oven cooking.

Design Your Solar Oven 1. Apply three principles from the reading to your design: a) Concentration (reflect sunlight) b) Absorption (attract heat) c) Retention (retain heat) 2. Use approved materials (cardboard box, aluminum foil, black paper, plastic wrap, packing tape, 5 sheets of newspaper). 3. Apply principles from Solar-Temperature equation.

Calculating ΔT in the Solar Oven •