摘要
VolcanoesIn the past thousand years,volcanoes have claimed more than 300,000 lives.Volcanology is ayoung and dangerous science that helps us against the power of the Earth itself.We live on a fiery planet.Nearly 2000 miles beneath our feet,the Earth’s inner core reachestemperatures of 12,000 degrees Fahrenheit.Molten rock or magma,rises to the earth’s surface.
