Hand-Held Heat Engine

See the direct relationship between pressure and temperature using these classic science toys. As individuals hold the glass bulb, the liquid inside reaches it's boiling temperature, which is just a bit above room temperature. As the heat energy goes up, so does the pressure, and the liquid rises into an upper bulb. Have a few of these at a lab station and let learners speculate about what is happening.

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  • An easy way for physical science students to view the results of increasing temperature and pressure in a closed system

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