Fast
identify the cause of each volcano below using the words: subduction, rift, and hot spot.

a) in 1973, a town in iceland called vestmannaeujar was surprised when lava began erupting from a vent or crack in the earth’s surface. the earth’s crust seemed to split

b) scientists feel that the cascade mountains, extending from california to british columbia, are still forming. two plates are colliding, forcing magma up from the mantle to form the mountain.

c) mauna loa in hawaii is the “growing mountain”. in 1969 and 1974, it erupted and poured out lava through a hole in the earth. this lava called and hardened into rock. below it, molten lava continues to flow.