Student Weather
Cloud in a Jar Experiment: How Condensation Makes a Mini Cloud
How to make a cloud in a jar, what it shows about condensation, cooling, water vapor, and cloud droplets.
Quick answer: A cloud in a jar demonstrates that clouds form when moist air cools enough for water vapor to condense onto tiny particles.
What it shows
Warm water adds moisture, cooling helps condensation, and tiny particles give droplets a surface to form on.
The jar is a model, not the whole atmosphere.
Science terms
Use words like evaporation, condensation, saturation, nuclei, and temperature change.
Connect the model to real clouds.
Safety
Use adult help with hot water or matches if the version requires them.
Classroom-safe versions can use ice and aerosol alternatives.