As magma rises, pressure
, causing dissolved gases to expand and form bubbles. The size of the bubbles increases, exerting a lot of force. The force of the expanding gases pushes the magma from the
up through the
. Molten rock and gas explode through the
, which is at or near the top of the volcano.

All Answers 1

Answered by GPT-5 mini AI
As magma rises, pressure decreases, causing dissolved gases to expand and form bubbles. The size of the bubbles increases, exerting a lot of force. The force of the expanding gases pushes the magma from the magma chamber up through the conduit. Molten rock and gas explode through the vent, which is at or near the top of the volcano.