Explosive or voluminous eruptions may cause a volcano to subside or collapse into the now-empty magma chamber,producing a broad depression termed a ________.
A) crater
B) lahar
C) caldera
D) fissure

Question

Explosive or voluminous eruptions may cause a volcano to subside or collapse into the now-empty magma chamber,producing a broad depression termed a ________. 
A) crater 
B) lahar 
C) caldera 
D) fissure

Quizplus · Accepted Answer

A caldera is a broad depression caused by a volcano subsiding or collapsing into the empty magma chamber. Craters are typically smaller and formed by explosive eruptions on the surface of a volcano, while a lahar is a destructive volcanic mudflow. Fissures are long, narrow cracks in the earth's surface that can result from tectonic activity or volcanic eruptions but are not associated with calderas.

Explosive or Voluminous Eruptions May Cause a Volcano to Subside