Cloud Bottle @Teachersource
Cloud Bottle  @Teachersource
Uploaded April 2019 | Updated September 2026, 3 weeks ago
Making a cloud with this palm-sized pump is easy. Remove the top and put a few drops of water inside the bottle. Add air to the bottle using the pump and watch: as the pressure increases, so does the temperature. Actuate the quick-release top and due to rapid decompression, a cloud forms instantly inside the bottle! A Liquid Crystal thermometer strip measures temperature changes throughout the experiment. This hands-on activity teaches the relationship between pressure and temperature in a closed container.
Available at teachersource.com/product/cloud-bottle/air-pressure
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Cloud Bottle

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