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.

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

There are more than just five hot spots throughout the whole Earth. There is the Tasman hot spot, the Hawaii hot spot, the Galapagos hot spot, the Yellowstone hot spot, Easter Island hot spot, Bouvet hot spot, St. Helena hot spot, the Canary Islands hot spot, and then Iceland hot spot.

aa (pronounced ah-ah)

Volcanic island arc

Pyroclastic material! Save

Either the loss of confining pressure causing the melting point of the material to drop below the in-situ temperature or due to the presence of volatiles which enter the mantle where subduction occurs and also lower the melting point of the material.

Convergent and divergent boundaries

Kilauea in Hawaii, which formed over a hot spot

No. Volcanic eruptions in Hawaii are not usually explosive.

Magma is liquid rock from volcanoes.