Up next in How to Do Fun Tech & Science Projects (52 videos)
School science fair coming up? Don't worry: We've got step-by-step instructions to dozens of science projects in this Howcast video series, including how to build an erupting volcano, how to make glow-in-the-dark art, how to make a weather barometer, how to make disappearing ink, how to make 3-D glasses, and how to make a marshmallow gun.
You Will Need
- Cardboard box
- Utility knife
- Poster board
- Tin foil
- 2 wood dowels
- Hot dogs
Select a large box
Select a box with a large surface area to make your solar hot dog cooker. A long box will collect more sun rays, which will produce more heat.
Cut a parabolic curve
Use a utility knife to cut out a parabola that slopes down and back up from one end to the other like the letter "U." Do this for the two longest, parallel sides.
Measure poster board
Measure and cut your poster board to fit the curve in the box using a pair of scissors. Cover the poster board with the tin foil, shiny side out.
Tape foil poster board in place
Tape the foil-covered poster board in place. Find the focal point of your cooker where the heat is greatest using your hand.
Measure wood dowels
Measure and cut your wood dowels to the right length so they can hold your hot dog at the focal point. Use an electric drill to create a hole in each dowel big enough to hold the skewer.
Skewer hot dogs
Skewer your hot dog and place the skewer in the wood dowel holes. Plunge the dowels into the ground on either side of the cooker and adjust to find the hottest spot.
Wait for the hot dog to cook
Wait for the sun to do its job.Give it between 6 and 12 minutes, and you'll be enjoying your solar cooked hot dog -- with or without mustard -- in no time.