Click on the picture of the volcano, then click on the word "Melting" under Igneous Rock. Watch how the volcano can erupt by clicking on the word "Erupt" in the activity. What happens after the lava comes out of the volcano and cools down?
That's right! It forms new land. Each time the volcano erupts, it forms more and more land! The lava cools down and makes different layers of rock over time.
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