Question

mudflows composed of soil, volcanic debris, and water can occur as the result of an explosive volcanic eruption.
what are these mudflows called?
o lahars
o pyroclasms
o fissures
o tephra

Explanation:

To solve this, we analyze each option:

• Lahars: Defined as mudflows (or debris flows) composed of volcanic debris, soil, and water, often triggered by volcanic eruptions (including explosive ones). This matches the description.
• Pyroclasms: Not a standard term for mudflows; pyroclastic materials are volcanic fragments, but "pyroclasms" is incorrect here.
• Fissures: Are cracks in the Earth’s surface, not mudflows.
• Tephra: Refers to fragmented volcanic material (like ash, lapilli) ejected during eruptions, not mudflows.

Answer:

A. lahars