Answer:
1. Deep within the Earth it is so hot that some rocks slowly melt and become a thick flowing substance called magma.
2.Since it is lighter than the solid rock around it, magma rises and collects in magma chambers.
3. Eventually, some of the magma pushes through vents and fissures to the Earth's surface.
4. Magma that has erupted is called lava.
Step-by-step explanation: