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PUMICE FLOATING IN A BEAKER OF WATER<br />
Its Cavities Are Formed By Gas Bubbles In Magma<br />
Pumice with a specific gravity of 3 should sink in water which has a specific gravity of 1, but because it is honeycombed with vesicles it floats.

Fphoto-66290501-6CC.jpg

PUMICE FLOATING IN A BEAKER OF WATER
Its Cavities Are Formed By Gas Bubbles In Magma
Pumice with a specific gravity of 3 should sink in water which has a specific gravity of 1, but because it is honeycombed with vesicles it floats.

Copyright:© 2005 Chip Clark - Fundamental Photographs

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