Weather Lab: Cloud in a bottle, how do clouds form?

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In this edition of Weather Lab, WETM Storm Team Meteorologist Jessica Camuto shows us how to make a cloud in a bottle.

Supplies: Two-liter bottle, water, matches

How do clouds form? Here is a simple explanation: 

Clouds form in almost every area across the world, but all go through the same process. They are made up of ice crystals and water droplets that are so small they are able to stay in the air.

When warm and moist air rises is expands and cools. The water vapor in the air goes through a process known as condensation (the conversion of a vapor or gas to a liquid) which forms very tiny water droplets that make up clouds.

These form clouds because they are tiny enough to stay in the air, and when collected together can cause many different types of clouds. 

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