which occurs just before a volcanic eruption?\no lava flows onto the sides of the volcano.\no the expanding…
which occurs just before a volcanic eruption?\no lava flows onto the sides of the volcano.\no the expanding gases push magma through the pipe.\no a pocket of magma forms beneath the volcano.\no new rocks are formed as lava hardens.
Answer
Brief Explanations:
Before a volcanic eruption, expanding gases build - up pressure and push magma through the volcanic pipe. Lava flowing onto the sides is during or after eruption, magma pocket formation is an earlier stage in the long - term process, and new rock formation is after lava cools.
Answer:
The expanding gases push magma through the pipe.