Where do volcanoes occur?

Answer 1

Volcanic eruptions do not occur just anywhere. Sixty percent of all active volcanoes are found at crustal plate boundaries such as the Pacific Plate, which has become known as the Ring of Fire because of the active volcanoes on its perimeter. Earth's crust, like the cracked shell of a hard-boiled egg, is broken into a number of "plates." These floating pieces of the crust are moving about very slowly on the hotter interior. Where the plates are moving apart or colliding with one another, volcanoes may form. Many volcanoes form oceanic islands in the Pacific Ocean or Mediterranean Sea. These volcanoes formed over "hot spots" in the crust and mantle. The Northern Hemisphere has approximately two thirds of the land-based volcanoes.

Answer 2

Pacific rim, called the Ring Of Fire, there are 400 active volcanoes, most are found UNDER the oceans.
West USA, Italy, Africa, Japan, Indonesia, Russia, --Geothermal hot springs are top of the earth volcanoes
Other planets in the Solar System have Volcanoes TOO!!

Answer 3

The Earth's mantle temperatures are hot enough to melt rock and form a thick, flowing substance called magma. Lighter than the solid rock that surrounds it, magma is buoyant much like a cork in water; being buoyant, it rises. As the magma rises, some of it collects in large reservoirs, or magma chambers that fuel volcanoes. As the rising magma nears the Earth's surface, pressure decreases, which causes the gases in the magma to expand. This expansion propels the magma through openings in the Earth's surface: a volcanic eruption occurs. Once magma is erupted, it is called lava.

Answer 4

in the ring of fire (google it) i goes around the world and that is where most volcanoes occur......there are also things called hot spots...which are other places volcanoes are. some islands are built up debris from volcanoes (like hawaii)....umm. they are in the middle of oceans sometimes but they could be inland....look it up to be sure though :^)

Answer 5

Volcanoes usually occur along tectonic plate margins (e.g. the Pacific Ring of Fire). They also occur at "hot spots" which are isolated areas away from plate margins (e.g. Hawaii and Yellowstone N.P.).

Answer 6

They start underground.

Coach

Answer 7

http://en.wikipedia.org/wiki/Volcanos
http://science.howstuffworks.com/volcano.htm
http://volcano.und.nodak.edu/vwdocs/frequent_questions/grp10/question919.html