In short, pumice is less dense than water, so it floats.
During the formation of pumice stone, air bubbles are incorporated into the stone itself. These air pockets make the overall mass of the stone much lower than you'd expect, and work like small floatation devices when the stone is placed in water.
Pumice, a volcanic stone, does not sink in water.There is one type of stone that won't SINK in water.....pumice.
Pumice is a type of stone that floats on water due to its high porosity and low density.
Pumice
Pumice.
Pumice stone does not sink in water unless it has been floating for many years.
pumice (a volcanic rock)
Pumice does not sink.
Pumice does not sink.
pumice does not sink in water unless it has been floating for many years
pumice
pumice stone
A pumice stone is light weight due to numerous trapped gas bubbles that can cause it to float on water.