Volcano cross-section in 3D

Switch between a composite and a shield volcano, turn the cross-section and watch it erupt.

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Questions students ask

What is the difference between composite and shield volcanoes?

Composite volcanoes are steep, built of ash and lava layers, with explosive eruptions of sticky magma. Shield volcanoes are wide and gentle, built of runny basalt lava with gentle eruptions.

What is the difference between magma and lava?

Magma is molten rock underground; when it erupts onto the surface it is called lava.

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