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 ...

Deadliest volcanic eruption: The 1815 eruption of Mount Tambora in Indonesia, which killed up to 100,000 people From lava fountains to towering ash clouds, volcanoes produce some of the most dramatic ...

Some volcanoes, such as the Cascade volcanoes up in Washington and Oregon, are of the type called a stratovolcano. These steep volcanoes sometimes erupt explosively and other times have calmer lava ...

Some scientists think we can better understand volcanoes by learning how the gaseous vortexes emerge. By Carolyn Wilke Some volcanoes perform a rather subtle trick: blowing rings of vapor that waft ...

Some volcanoes, called stratovolcanoes, sometimes erupt explosively and other times have calmer lava flows that just spill out on the surface. A shield volcano is very different and is built almost ...

Mar 25, 2019 Mar 25, 2019 Updated Dec 21, 2020 0 Blue Sky Science is a collaboration of the Wisconsin State Journal and the Morgridge Institute for Research. Hawaii's Kilauea volcano on the Big Island ...