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(1)
(2)is an exaggeration
(3)Actual magma is within 45 km depth (shown in green)
(4)Large ones are energized by convection in the mantle, called a “plume,” which is like a living pillar
(5)Volcanoes don’t make loud noises in Plum
(6)Popping a pimple doesn’t make you gush blood.
(7)And the Yellowstone Plume is only 400 kilometers deep
(8)There’s a 2500-kilometer-deep plume underneath Hawaii.
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