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What state has the largest number of volcanoes?

A:

Quick Answer

The state with the largest number of volcanoes is Alaska. Out of the 169 volcanoes in the United States, more than 130 volcanoes and volcanic fields are located in Alaska.

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Full Answer

The U.S. Geological Survey has classified 18 volcanoes in the country to be extremely-high-threat volcanoes, five of which are found in Alaska. These include Akutan Volcano, Augustine Volcano, Makushin Volcano, Redoubt Volcano and Spurr Volcano. Most of Alaska's volcanoes are situated along the Aleutian Arc, which extends for 1,550 miles. Experts believe that eruptions originating from the Cook Inlet volcanoes, comprised of Augustine, Redoubt, Spurr and Iliamna, may result to severe damages and heavy casualties, as these volcanoes are closest to Anchorage, the state's most populous city.

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Related Questions

  • Q:

    What impact do volcanoes have?

    A:

    The primary impact volcanoes have on the environment is the release of volcanic gases into the atmosphere. Volcanoes release around 130 million tons of carbon dioxide each year, as well as toxic pollutants like sulfur dioxide, hydrogen sulfide, hydrogen chloride and hydrogen fluoride. However, volcanoes can also have a positive impact on the environment because the lava and ash produced by an eruption contain valuable nutrients for the soil.

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  • Q:

    Why do volcanoes occur?

    A:

    Volcanoes occur when magma from the earth's mantle reaches the surface. This can happen at the place where two tectonic plates diverge or converge. It can also occur in a place called a hotspot, in which magma from the mantle reaches the surface in the middle of a tectonic plate.

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  • Q:

    Are volcanoes mountains?

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    While many volcanoes are mountains, it is possible for a volcano to erupt from a vent in any type of land form. Over time, volcanoes become mountains by depositing their discharge around them in ever-increasing layers. Not all mountains are volcanoes.

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  • Q:

    How are volcanoes measured?

    A:

    Volcanoes are measured and reviewed through the Volcano Explosivity Index, or VEI, which determines the quality of the volcano, the volume of the lava, how high the volcano measured at the time of eruption and how often the volcano explodes, according to the Old Farmer's Almanac. By reviewing each volcano against this criteria, it is simpler to determine which ones have had the most impact.

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