Slightly off on a tangent, but interesting…

How to Make a Thermometer
By James Hunt

A thermometer is an instrument that measures the temperature. Depending on what country you live in, temperature is measured either in a scale called Fahrenheit or Celsius (sometimes called Centigrade). There are thermometers for food, humans, and the weather. You can even make a thermometer yourself, it’s simple.

Here’s what you’ll need:
- Water (plain old tap water will do just fine for this experiment.)
- Rubbing alcohol
- 1 clear plastic bottle with a narrow neck
- Food coloring in your choice of color
- See-through plastic drinking straw
- Modeling clay.

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