Layers of lava build up over time, creating volcanoes. Tectonic plates are key. They are large pieces of the Earth’s crust which can move towards, away from, or alongside one another ...

CONNOR: The surface of the Earth is called the crust and it is made up of different plates, pieces that fit together and float about on a layer of ... surface causing a volcanic eruption.

Mount Spurr, a volcano in Alaska, is showing signs of elevated unrest, with scientists warning that it could erupt in a ...

Mount Spurr is a stratovolcano with layers of lava and ash located roughly 80 miles west of Anchorage, making it visible from Anchorage and the Kenai Peninsula. The volcano is expected to erupt in the ...