The ancient city of Pompeii was destroyed when a mixture of hot volcanic gases ash and rock poured down Mount Vesuvius and covered the city. Which two terms describe the substance that was produced by?

The two terms that describe the substance produced by the eruption of Mount Vesuvius are "pyroclastic flow" and "tephra." Pyroclastic flow refers to the fast-moving current of hot gas and volcanic matter that swept down the volcano, while tephra encompasses the solid material, including ash, pumice, and volcanic rock, ejected during the eruption.