Most volcanoes form at the boundaries of Earth's tectonic plates, which are huge slabs of crust and upper mantle that fit together like puzzle pieces. Think of these plates as massive rafts floating ...

Submarine volcanoes, volcanic structures hidden beneath the ocean surface, play a vital role in shaping Earth’s geology and marine ecosystems. Formed through tectonic plate movements, rising magma, ...

Covers how volcanoes are formed, and treats them in historical and mythological perspective, with attention to Mt. St. Helens, Mt. Rainier, and volcanoes in Hawaii. Has a segment on the Modoc people ...