ERN Item Type:
- Classroom Activities
In a clean-air chamber (all solid particles are filtered out) a cloud will not form even with a relative humidity greater than 200%. While clouds are made up of droplets that are essentially distilled water, each droplet is not 100% pure. At the cloud droplet's core is a tiny water attracting particle upon which moisture collects and grows. This demonstration will show that just a small amount of nuclei (smoke) is all that is needed in the production of a cloud.