I have a science project due this friday. Its about making a water heater. Can someone help me?
>We're not allowed to use fire or metal or solar or anything like that.
>I'm thinking of using the sun?
That's a solar solution : not allowed by definition.
One option is chemical heating in glass/plastic -- find two substances that you can mix which produces an exothermic reaction that can release enough energy to heat/boil water but won't melt plastic (or break/melt glass.)
If you go to a store that sells camping equipment, they might have examples of this -- they may sell food packages that make use of this chemical heating idea -- you either add water to an outer pouch and the water mixes with the chemical that produces the heat that boils the water and heats the inner pouch containing the food, or you squeeze a plastic pouch that contains three pouches, one containing the food and two plastic liner pouches that contain two different chemicals that, when mixed, produce the heat for cooking. The squeezing action breaks the plastic pouches containing the chemicals and helps mix the chemicals, but won't break the pouch containing the food or the outer pouch containing all the other pouches.
The trick is to determine which chemicals to use and in what quantity, and whether or not your local government allows private citizens to get access to those chemicals (since the same chemicals can probably be used to make a bomb.)
Get an ice pack, a thermos bottle, two lengths of tube, a tube of silicone sealant, and a low flow inline aquarium/fountain pump.
Drill two holes in the top of the ice pack.
Run each length of tube through the holes:
Pull one tube through so that it is long enough to reach the bottom of the ice pack. Run the other end of the tube so it ends near the top of the thermos (drill holes in the lid of the thermos bottle if necessary.)
Pull the other tube through so that it end near the top of the ice pack (near the lid.) Run the other end of the tube down to the bottom of the thermos (drill holes in the lid of the thermos bottle if necessary.)
Cut the line that ends near the bottom of the thermos (make the cut outside the thermos) and install the inline fountain pump so that it sucks water from the thermos and forces it into the ice pack.
Use the silicone sealant to ensure a waterproof seal where the tube meets the lids of the thermos and the ice pack.
Prime the pump and tubes, fill the ice pack and thermos with water.
Take the ice pack and stuff it into your pants, between your legs.
Activate the pump.
As the water in the thermos reaches your body temperature, you can deactivate the pump, open the thermos, pour off some of the water (to another container), refill the thermos with new (cold) tap water, then reactivate the pump.
If an electric pump is not allowed, consider a bulb pump (squeeze bulb and fluid flows in one direction.) if a manual bulb pump is not allowed, ensure the tube/thermos connection is water tight and place the thermos on its side above the level of the ice pack/your crotch -- this will utilize natural convection to circulate the water (warm water from the ice pack will rise as colder water from the thermos will fall.)
If the water is not getting hot fast enough, consider masturbating to raise the temperature between your legs (and keep yourself entertained while waiting for the water to get hot.)
The upper bound on the temperature is 37C without masturbation; about 40C with.
I have a science fair project due on friday can you give me some ideas i search the web still nothing?
You could do it on the Stroop Effect. The effect of colors and words being processed in people's minds and why humans can pick up words faster than colors. Here is a website you can try. http://faculty.washington.edu/chudler/words.html
You gotta do it yourself! :-)
These sites have lots of ideas: