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Volcanic eruptions are one of the most spectacular acts in nature.
Hot lava from deep inside the Earth is forced up and over the surface. When the lava cools, it may pile higher and higher to form such mountains as Mount Rainier in Washington. While spectacular, volcanic eruptions can also cause a lot of damage. The hot lava can burn and cover many miles of landscape and sometimes injure or kill people. In this Challenge, you can use resources such as your dictionary, encyclopedia, science books, and the Web to answer some questions about volcanoes.