Question

why are pumice rocks light in weight​

Answer 1

Explanation:

Pumice is an extrusive volcanic rock. It is usually pale in color and very lightweight. ... When a volcano erupts, gases escape causing fast cooling and depressurization of the surrounding molten lava, filling it with air pockets. This results in a rock so lightweight it often float

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Answer 2

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• As during the volcano eruption gases escape the rock and it becomes hollow
• This is the reason why pumice rocks are light in weight

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