GEOLOGY

Detailed explanation-1: -The crater is the bowl shaped opening located at the top of the volcano.

Detailed explanation-2: -Introduction. A volcanic crater is a bowl-or funnel-shaped depression that usually lies directly above the vent from which volcanic material is ejected. Craters are commonly found at the summit of volcanic edifices, but they may form above satellite (flank) vents of composite and shield volcanoes.

Detailed explanation-3: -The caldera filled with rain and snow, forming a lake. A caldera is a depression created after a volcano releases the majority of the contents of its magma chamber in an explosive eruption.

Detailed explanation-4: -Introduction. A volcanic vent is the place at the Earth’s surface where lava flows, tephra (pyroclastic materials consisting of volcanic ash, lapilli, or bombs), and fragmented rocks are erupted. Volcanic gases are also emitted at vents.