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| Do you know HOW volcanoes are formed? | |
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| If you tell me, I'll know! | |
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| Well.... Volcanoes erupt because the hot molton lava boils up inside of it. The molten rock, or magma, is less dense than solid rock. | |
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| That means it will float to the top of the surface of the volcano, and the water and dissolved gasses inside will expand causing the eruption! | |
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