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Over 550 volcanoes have erupted on the surface of the Earth since human kind has been able to record history. Their destructiveness has claimed the lives of over 200,000 people during the last 500 years with 26,000 deaths between 1980 and 1990 alone. They have also cause an innumerable amount of property damage. The biggest eruption of the twentieth century was the eruption of Novarupta on the peninsula of Alaska. The amount of lava that erupted measured to roughly 15 cubic kilometers. …

…other, they are so closely connected that they appear to be the result of one another. Often times during a volcanic eruption there will appear to be an earthquake, this is usually not so, its just the ground shaking caused by the explosions. When lava seeps from surface vents made from earthquakes, it is not a volcano. There have been no recorded volcanoes or earthquakes that have been clearly the direct result of one another.