Food Web in a Kelp Forest
Generate Electricity for Underwater Habitat
Producing Air From Water
Solar Ovens
Build a solar oven that will increase the temperature of 100 ml of water as much as possible in a given amount of time. The oven must be built of materials brought from home. Before you build, you must design a scale drawing of what you intend to build. When finished, you will write a paragraph based on what worked, what didn't work and how you would improve your design if you built the stove again. The stoves will be marked on quality of building, and efficiently.
A site with theory and designs
A note on parabolic cookers
"Parabolic geometry is well known, and it was probably the very first type of
solar cooker. In this category, there are maximum variations. The reason for its
popularity was the focus which was much better and sharper than that of other
types of reflectors, but at the same time it was very sensitive to even a slight
change in the position of the sun and hence the use of such reflectors means
constant tracking."
From: http://solarcooking.wikia.com/wiki/Parabolic_solar_reflectors
In your design you need to think of several things:
1. Gather as much sunlight as you can and reflect it onto the part you want to heat
2. Insulate the part you want to heat from the surrounding environment
3. Create a stable design that can be self-supporting and wind proof
4. The design must provide an opening to move a 200ml beaker in and out
5. Be aware of reflection and absorption of light energy