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USGS Frequently Asked Questions
FAQ's about Volcanoes
What is an "eruption" ?
How much of the Earth is volcanic?
What emergency supplies do I need?
Does the U.S. produce any power using natural steam energy?
What is a volcano?
What is the "Ring of Fire"?
Where did the term "volcano" come from?
Is there evidence for a cause and effect relationship between eruptions that occur at about the same time from volcanoes located hundreds to thousands of km apart?
Is it dangerous to work on volcanoes and what precautions do scientists take?
Can an eruption at one volcano trigger an eruption at another nearby volcano (for example, within about 10 km)?
Where can I find information about volcanoes?
What do we know about the interior of the Earth?
What instruments, tools, and methods do you use to study volcanoes?
What kind of school training do you need to become a volcanologist?
What is plate tectonics?
What volcanoes in the conterminous United States have erupted since the Nation was founded?
Can earthquakes trigger volcanic eruptions?
Is there a relationship between large earthquakes (>M 6) that occur along major fault zones and nearby volcanic eruptions?
What is a landslide, and what causes them?
How many active volcanoes are there in the world?
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U.S. Geological Survey