thermometer measures heat energy. Build a simple one.
What to do ?
1. Pour equal parts of tap water and rubbing alcohol into the bottle, filling about 1/8 to a 1/4 of the bottle.
2. Add a couple of drops of food coloring and mix.
3. Put the straw in the bottle, but don't let the straw touch the bottom (DO NOT DRINK THE MIXTURE).
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, Added: 27 May 2007
http://www.energyquest.ca.gov/projects/thermometer.html
