Volcanoes

The Ring of Fire (Pacific Ring of Fire) is an area of Pacific Plate subduction, rimming (of course) the Pacific Ocean. The plate subduction creates a line of volcanism geographically around its perimeter that appears to form a circle or ring.

The Ring of Fire is the subducting plate boundary of the shrinking Pacific Ocean. The subducting oceanic crust is being drawn under less dense oceanic and continental crust and is melting into the upper mantle which can lead to volcanism and earthquakes.

Usually along convergent plate boundaries, but they can also occur at divergent plate boundaries and hotspots.

Cinder Cones

The volcanic landforms at divergent ocean plate boundaries are oceanic ridges.

aa (pronounced ah-ah)

Volcanic island arc

magma compostion <--novanet

Convergent oceanic-continental boundary

If a volcano erupts more explosively, the lava spewing out tends to reach farther, possibly ruining a near by town. If it erupts more quietly, not as much lava tends to spew out. However, any eruption will cause harm to the atmosphere because it releases harmful pollutants.

No. Volcanic eruptions in Hawaii are not usually explosive.

Magma is liquid rock from volcanoes.

A hot plume of mantle material, which may extend to extend to the core-mantle boundary, produces a(n) a volcanic region a few hundred kilometers across