Cloud in a Jar
Can you make a cloud in a jar? Absolutely! With just a few things from around the house you can simulate the conditions needed for clouds to form.
Here’s what you need:
- A jar with a lid
- A cup or hot water
- Aerosol spray, like hairspray
Here’s what you do:
- Pour hot water into the jar. The water should be hot, but not to the point of boiling.
- Swirl the water to warm the jar.
- Place the lid upside down on top of the jar. Fill the lid with ice cubes.
- Remove the lid and quickly spray a bit of hairspray. Cover quickly.
- Watch as the cloud forms inside the jar. After the cloud fills the jar, you can remove the lid to watch the cloud escape.
What’s going on:
A cloud needs a few things to form:
The first: Warm, moist air. For our cloud in a jar, the warm water and taking the time to swirl the water to warm the jar provided this.
Second? A cooling process. For the cloud in a jar, our ice did this!
Last, clouds need a cloud condensation nucleus. This provides something for water vapor to condense. A simple speck of dust could be a cloud condensation nuclei, but in this case it was the tiny particles from the aerosol spray.