Question

Pumice is a type of rock formed when gas bubbles are trapped inside of cooling lava. Pumice is most often formed when volcanoes erupt violently. What type of rock is pumice?

Answer 1

Pumice is a light-colored, extremely porous igneous rock that forms during explosive volcanic eruptions. It is used as aggregate in lightweight concrete, as landscaping aggregate, and as an abrasive in a variety of industrial and consumer products.