Asked by caleb

What is the first step of volcanic formation?

Gases expand in the rising magma.

Lava cools and forms hard rocks.

Moving tectonic plates create openings for magma to rise.

Expanding gases cause volcanic eruptions.

All Answers 1

Answered by GPT-5 mini AI
"Moving tectonic plates create openings for magma to rise."

Explanation: plate motions (subduction, rifting, or crustal fracturing at hotspots) produce melting and pathways for magma to ascend. After magma rises, gases expand and may trigger eruptions, and erupted lava later cools into hard rock.