1. Which of the following describes a pyroclastic flow? a. It is the flow of molten rock materials. b. It is a fast turbulent flow of fragmented volcanic materials (ash and rocks) mixed with hot gases. c. It is a rapid flowing thick mixture of volcanic materials and water, d. It is a large wave generated by displaced water due to volcanic eruption.
because pyroclastic flow is a dense, fast moving flow of solidified lava pieces volcanic ash, and hot gases. it occurs as part of certain volcanic eruptions
