Answer:
A fast-moving wet slurry consisting of a mixture of water and volcaniclastic debris is termed a lahar
Explanation:
A lahar is a debris flow or mud-flow that consists of a mixture of volcanic material, rock particles and water, flowing typically along a river valley down from a volcano
Lahars can be either from either pyroclastic flows or heavy rainfall after a volcanic eruption
Lahars are hazardous as they can result in destruction, severe damage destroying buildings and some times entire small towns are wiped out. This is more so as they move silently and very fast down to the valleys
