How are volcanoes made?
Volcano Builder
How are volcanoes made?
Deep under your feet, the Earth isn't solid rock all the way down. Beneath the crust we walk on, there's a thick layer of super-hot rock called the mantle — so hot it flows like honey. And when pressure builds up enough, that molten rock punches through to the surface. We call that a volcano.
The mantle rock is called magma while it's underground. It's not quite liquid, not quite solid — imagine chocolate pudding heated until it can ooze and swirl. Magma forms when rocks deep down melt from intense heat and pressure, sometimes a hundred miles below your feet.
