Volcanoes
Terms
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- pyroclastic flow
- Hot ash and gasses violently flow down from a volcano.
- ash
- Glasslike slivers of cooling magma.
- ring of fire
- Area surrounding Pacific Ocean, where most volcanoes are located.
- aa
- jagged brittle lava
- magma
- Molten rock inside the Earth's crust.
- convergent boundary
- When continental plates collide.
- bombs
- Blobs of magma that cool in the air
- explosive eruption
- A volcanic eruption that is very destructive. Hot gasses and ash shoot out of the volcano.
- non-explosive eruption
- A volcanic eruption that produce relatively calm lava flows.
- pillow lava
- lava that forms under water
- divergent boundary
- When continental plates move apart.
- shield volcano
- Large volcano spread out with non-explosive eruptions.
- lava
- Molten rock after it leaves the volcano.
- pahoehoe
- ropelike lava
- hot spots
- Pockets of magma in the Earth's crust that are far from plate boundaries.
- cinder cone volcano
- Small volcano that erupts for short periods of time, steep sides.
- composite volcano
- Most common volcano, formed from explosive eruptions.