How to Make a Cloud in a Jar

IMPORTANT: Work with an adult family member on this exciting science experiment.

STUFF YOU’LL NEED:

AN ADULT SHOULD DO THIS PART:

1. Fill your jar half full of boiling water and swirl the water around the jar.

2. Quickly seal with the lid.

KIDS CAN SAFELY DO THIS PART:

3. Place as many ice cubes as you can in a plastic sandwich bag and place on top of the lid.

4. Shine the flashlight through the jar to see the cloud forming.

5. When you can see the cloud, take off the lid and watch the cloud escape.

WHAT HAPPENS:

Warm water created warm air inside the jar. Some of the water evaporated into the air. When this warm vapor rose, it reached the cold air below the ice-covered lid. This vapor then condensed into particles forming the cloud. Your cloud should swirl around as the warm air rises and the cold air sinks.