Fabulous Floating Rocks
Did you know that some rocks can float? In this quick geology demonstration we will explore pumice and its unique and outrageous ability to float.
Materials:
- Piece of pumice
- Container
- Water
Instructions:
- Fill a container with water.
- Place the pumice in the water.
- Enjoy observing the fabulous floating rock!
WATCH THE QUICK VIDEO TUTORIAL!
How it Works:
Pumice floats because it has a very low density due to the air bubbles trapped inside.
Make This A Science Project:
Test different sized pieces of pumice to see if they float. Try leaving pumice in water for extended periods of time to see if it eventually sinks. Can you put something like liquid soap on the pumice to make it sink.
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