Cardboard box with attached lid. Set the oven in the direct Sun on a sunny day when the outdoor temperature is at least 85 degrees Fahrenheit. A solar oven needs an outdoor spot that is sunny for several hours. You just need to pick up a few tricks first. Allow teams a predetermined amount of time to construct their ovens (approximately 30 minutes should be sufficient.). Food cooked in the shortest time = 5 points, Food cooked in the next shortest time = 4 points, Food cooked in the next shortest time = 3 points, Food cooked in the next shortest time = 2 points, Food cooked int he next shortest time = 1 point.
The first time, just set the oven into direct sunlight and watch the temperature climb. The pot will get hotter than the temperature of the oven cavity itself (unlike a conventional oven), so be extra careful. Close the lid of the solar oven and let the Sun heat it up for a few minutes more, just to melt the chocolate a bit. Research indicates that cooperative learning methods -- having students work in small groups -- can help them learn concepts and skills. A solar oven can burn you every bit as badly as a conventional oven. You also need a black, aluminum baking pot with a snug lid; everything that’s cooked will go into this pot, so this will limit your food options. The box cooker is a simple type of solar cooker.
Untwist the coat hanger and cut a section approximately 30.48 cm in length. Line the inside of the box with aluminum foil, again gluing it down and making it as smooth as possible.
They were basic rectangular boxes that I cut and assembled out of spare plywood. A solar oven can burn you every bit as badly as a conventional oven. Close the oven lid (the part with the plastic wrap on it) tightly, and prop up the flap to reflect the sunlight into the box. Introduce the challenge. How to Make Your Swimming Pool More Efficient, Solar Power Your Home For Dummies Cheat Sheet.
Preheat the oven for at least 30 minutes. You can make an oven as big as you want, however, so that you’re not really limited.
Push one end of the wire through the bottom of the milk container using the scissors to cut a hole if necessary. Solar ovens aren’t ideal for foods with specific times and temperatures. Some people have cooked Thanksgiving turkeys in a solar oven, to very good effect. You’ll find that the average cooking time for most meals is 2-3 hours on bright days. Cover the bottom (inside) of the flap with aluminum foil, spreading a coat of glue from the glue stick onto the cardboard first and making the foil as smooth as possible. Lid should have flaps so that the box can be closed tightly. What you will need.
Prop the flap open to reflect the light into the box. Then, open the oven lid and place a piece of chocolate (about half the size of the graham cracker square) on top of each marshmallow. Place a marshmallow on each.
How would you redesign your oven base on the lessons you have learned? Let’s recap: You covered the flap with foil so that the foil would reflect sunlight into the oven. In other words, the solar oven is like a super greenhouse. Likewise, you can heat pots of beans, chili, and other canned goods such as vegetables and soups, depending on the sun. Have an adult cut the box with the box cutter or blade. What role did the aluminum foil play in the solar oven?
Marshmallows, raw apple slices, or other suitable food to "cook", Construction paper - assorted colors with plenty of black available, Books or other objects that can be used to prop up the over at the proper angle, Analyze data from tests to determine similarities and differences among several design solutions to identify the best characteristics of each that can be combined into a new solution to better meet the criteria for success, Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem, Apply scientific principles to design, construct, and test a device that either minimizes or maximizes thermal energy transfer. Test the stick you will use to prop the lid up. What modifications did not prove effective? Prop the flap open with a pencil. Break graham crackers in half to make squares. They don't work at night or on cloudy days. The best sun is between 10 a.m. and 2 p.m. but cooking can take place all day as long as you re-orient the oven as the sun moves. So if you live in the northern hemisphere, chances are you can only use the oven in the summer months. But plenty of foods fit the bill. What modifications from the basic design increased the efficiency of the oven? Provide students with directions to build a basic solar oven and encourage them to modify and expand upon the basic plan as they see fit. Depending on the weather and the time of year, cooking times may range from 10 minutes to 30 minutes. Build and use a simple solar oven. Cook the Marshmallows. A solar oven is a box that traps some of the Sun’s energy to make the air inside the box hotter than the air outside the box. Harness the energy of the Sun to make the best snack ever invented, S’mores! Through the construction and testing of a solar oven, students will understand the importance of solar energy to the establishment of a lunar base; develop methods to maximize solar power efficiency; and develop skills in teamwork, communication and problem solving. Using scissors and leaving the mouth of the container intact, cut away the side of the milk container with the handle. Photo by Joel Dufour. Using the straight edge as a guide, cut a three-sided flap out of the top of the box, leaving at least a 1-inch border around the three sides. You will probably have to tape the prop in place. The team whose oven completely cooks the food item in the shortest time wins. For example, aim where the sun is at 5 p.m., and when you get home from work, your dinner’s ready! ), Box cutter or Xacto knife (with adult help, please! Years ago I had built a few diy solar ovens. Try to keep the foil as smooth as possible and avoid wrinkles. You’ll be pulling the heated pot up and out of the oven, so get handles that facilitate this upward motion. (The directions below are included in the Student Sheets.). Certain pots work better than others, so try some different candidates and see what happens. I looked at three or four solar oven, and using their findings and ideas, I built the Ultimate SOLAR OVEN! The solar oven also won’t work during pitch black nights.
Note that unlike most recipes, our s’mores have the marshmallow UNDER the chocolate.
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