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Kilauea is the world’s most active volcano. Hot liquid rock flows from its crater. From May to August 2018, 320,000 Olympic-size swimming pools’ worth of lava was released. It has been continuously erupting since 1983.

Magma is hot, hot, hot! Scientists estimate that molten rock below Kilauea Volcano in Hawai’i is about 2,700 degrees Fahrenheit (1,500°C). The magma cools as it moves toward the surface over time. Once the magma cools to about 1,830 degrees Fahrenheit (1,000°C) or less, it can’t flow like a liquid. It starts to turn into a solid. If it continues to cool, it will eventually form an igneous rock.

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Making Connections


Which of the three types of rock is your favorite? Why?


What other books have you read about rocks? Were there facts in this book that were also in those books?


Would you want to visit the Grand Canyon or the Hawaiian volcanoes someday? Why or why not?

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