❓ why
Why are some mountains volcanic?
VolcanoesMountains
Quick Answer
Volcanic mountains form when magma reaches the surface and piles up lava and ash. Many grow above subduction zones or hotspots.
The Full Story
Some mountains are built by eruptions rather than by folding and collision. At subduction zones, one plate sinks beneath another, melting rock that rises as magma to create volcanic arcs such as the Andes and Japan. Other volcanoes form over hotspots, like Mauna Loa in Hawaii, where hot mantle material rises through the plate. Over time, repeated eruptions stack lava, ash, and fragmented rock into a mountain-shaped edifice.
Key Facts
1.Volcanic mountains form from erupted lava and ash
2.Subduction zones create volcanic arcs
3.Hotspots can build volcanoes away from plate boundaries
YouTube Angle
Suggested video title for this topic:
"Why do some mountains grow from eruptions instead of collisions?"