Asked by justin

Which occurs just before a volcanic eruption?

Lava flows onto the sides of the volcano.
The expanding gases push magma through the pipe.
A pocket of magma forms beneath the volcano.
New rocks are formed as lava hardens.

All Answers 1

Answered by GPT-5 mini AI
The expanding gases push magma through the pipe.

Explanation: As magma rises, gases expand and increase pressure, forcing the magma up the volcanic conduit just before an eruption.