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Keepin’ it Cool! Design Your Own Thermos

Experiment #13 from Elementary Science with Vernier

Education Level
Elementary School


How does a thermos keep hot drinks hot and cold drinks cold? This activity will give you a chance to use some of the things you have learned about heat to design your own thermos.


In this activity, you will

  • Use what you learned about heat to design a thermos that will keep cold water cold for as long as possible.
  • Measure the changing temperature of the water in the thermos.

Sensors and Equipment

This experiment features the following sensors and equipment. Additional equipment may be required.

Option 2


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This experiment is #13 of Elementary Science with Vernier. The experiment in the book includes student instructions as well as instructor information for set up, helpful hints, and sample graphs and data.

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