Beyond the Forecast: Cloud In A Bottle Experiment

Beyond the Forecast

Cloud In A Bottle Experiment

MATERIALS:

  • 1 tsp. rubbing alcohol 
  • 1 (1 liter) clear bottle with screw-on cap 
  • Air pump 
  • Nail 
  • Hammer 

PREP WORK: 

  • Unscrew the cap and place on a table. Pierce small hole into the center of the cap by hammering the nail through. Remove and discard nail. 
  • Add 1 tsp. of rubbing alcohol to the inside of the bottle 
  • Screw cap back on to bottle 

EXPERIMENT: 

  • Insert air pump needle into nail hole on the cap. 
  • Power up the air pump and fill the bottle with air for approx. 5-10 seconds.  
  • ***Not all air pumps are built the same. Do not exceed 5-10 seconds to prevent excessive pressure*** 
  • Remove the needle (air will hiss out of the nail hole as the cloud condenses inside of the bottle). 

EXTRA NOTES:  

Inside the bottle is a small amount of rubbing alcohol that will act as a condensate for the cloud to form. Do not consume this liquid. 

With younger children it may be necessary to complete the entire process by a supervisor. That person can then pass around the cloud in the bottle for the children to examine. 

Copyright 2020 Nexstar Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.

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