What causes volcanoes to erupt? — Avery, age 8, Los Angeles
On Nov. 27, 2022, Mauna Loa — the world’s largest active volcano — erupted on the island of Hawaii. For days, fountains of lava, boiling at more than 2,000 degrees Fahrenheit (1,100 degrees Celsius), spewed upward and flowed down the mountain’s sides.
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