What are pumice rocks?
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3
Answer:
Pumice !!
♤Pumice is another light coloured (light grey or cream) igneous rock. It is formed by Quick cooling of lava. Frothy lava contains a lot of dissolved gases.
♤As the Lava cools, the gases trapped inside it escape out, forming holes in the rock. This makes it very porous and light.
♤That is why it can float on water. Pumice stone is used in making light-weight building materials like concrete blocks.
♤It is also used as a scrubber to remove dead skin frok the body and as a teeth polishing powder by dentists.
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Answer: Pumice rock is a volcanic rock that has
pores in it. The holes that hold air makes
the density of the rock lesser than the
density of water. Due to it a pumice rock
floats on water.
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