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Convergent boundaries produce volcanoes.
Volcanoes form when an oceanic plate and a continental plate converge, causing the oceanic plate to subduct. The subduction causes a magma chamber to form which feeds the volcano when it erupts.
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Why do so many of earths volcanoes occur along plate boundries?
Volcanoes occur near plate boudaries because volcanoes need water to erupt.
What kind of tectonic collision produces volcanoes?
oceanic-continential
What produces the forces that form volcanoes and cause earthquakes?
Tectonic plate motion.
What is the direction of the plate and how does this compare to the trend in direction of the island chain?
The pacific plate moves towards the northwest. the plate moves the older volcanoes with it and so the hot spot produces new volcanoes.
What famous feature in California represents one of the plate boudaries?
divergent boundary
What boudaries can produce volcanoes?
Plate (subductive).
Why do so many of earths volcanoes occur along plate boundries?
Volcanoes occur near plate boudaries because volcanoes need water to erupt.
What kind of tectonic collision produces volcanoes?
oceanic-continential
What kind of volcano produces the most violent type of activity?
volcanoes
What collides with plate boudaries?
Other plates.
What layer produces the magma that cause seafloor spreading and volcanoes?
the upper mantle
Volcanoes can erupt due to the blank of plates that produces heat for the rock to melt?
Subduction.
Is pahoehoe lava only found in Hawaii?
No. Many shield volcanoes produces pahoehoe.
How much sulphur dioxide is produced in Iceland?
Sulphar Dioxide is the gas that volcanoes release. How much Iceland produces depends on how many and how often volcanoes erupt.
How are the mountains that are formed by subduction diffrent from mountains formed by continental crusts converging?
Subducting crust produces volcanoes and a narrow range of mountains (like the Andes). Continental convergence does not produce volcanoes and produces a wider range of mountains (Rockies or Himalayas).
What are the three types of plate boudaries?
lithosphere, asthenosphere ,and the methosphere
What is called when lava from undersea rift zones produces volcanoes and mountain chains?
mid ocean ridges
