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 ...

SIOUX CITY (KTIV) - Gather your supplies! In this episode we will use everyday materials to learn about the formation of volcanoes. Volcanoes are openings where lava, small rocks, and gas erupt from ...

Volcanoes are a powerful force of nature. There are about 1500 active volcanoes on our planet right now. A volcano is an opening in the Earth's crust that allows lava and other volcanic matter to ...

For decades, volcanologists believed that the primary trigger for explosive eruptions was a drop in pressure as magma rises toward the surface. When pressure falls, gases dissolved deep within the ...

A unique phenomenon appeared in an Upstate New York park as frigid temperatures consumed the Northern Tier of the U.S. and ...

Along 1,100 kilometers, from Mexico to Costa Rica, lies the Central American volcanic arc, where the variety of magma types make for a geological paradise. By Pablo Fonseca Q. / Knowable Magazine ...

The explosiveness of a volcanic eruption depends on how many gas bubbles form in the magma – and when. Until now, it was thought that gas bubbles were formed primarily when the ambient pressure ...

This Is the Way the World Ends? Volcanoes Could Darken World June 6, 2012 — -- Are you worried about the end of life as we know it? Then don't just look to the sky for that catastrophic asteroid ...