Final answer:
Volcanoes can cause tsunamis and are caused by seismic waves. The intense heat from volcanic eruptions can melt ice and snow, leading to fast-moving mudflows called lahars, which can cause flooding. Additionally, volcanic eruptions can trigger the collapse of craters or lakes, causing flash floods.
Step-by-step explanation:
Volcanoes are not the leading cause of flooding, but they can cause tsunamis and are caused by seismic waves. When volcanoes erupt, the intense heat can melt surrounding ice and snow, creating fast-moving mudflows called lahars, which can lead to flooding in nearby areas. Additionally, volcanic eruptions can trigger the collapse of volcanic craters or lakes, sending massive amounts of water downstream and causing flash floods. For example, the eruption of Mount Pinatubo in 1991 in the Philippines resulted in lahars and flash floods that caused widespread flooding and destruction.