Volcanoes. A short video for 11-14 year old pupils, exploring tectonic activity and volcanoes and featuring case studies from ...

Volcanoes are usually found along the boundaries of tectonic plates. Constructive plate boundaries are where tectonic plates are moving apart, and magma here can gradually rise and form new crust ...

This volcanic arc delineates the boundary between the Pacific and North American tectonic plates ... liquid magma rises to the surface forming a line of volcanoes. Augustine Volcano showing ...

Venus, however, is a different story. Its crust is thicker—anywhere from 30 to 90 kilometers—and its surface is extremely hot ...

Unlike volcanoes at tectonic plate boundaries, hotspots occur in the middle of tectonic plates and remain stationary ... build up a volcanic structure, forming an underwater volcano.

Venus—a hot planet pocked with tens of thousands of volcanoes—may be even more geologically active near its surface than ...

Iceland is a country of fire and ice, home to several volcanoes and straddling two tectonic plates. The Eyjafjallajokull volcano ... clog fuel and cooling systems and melt to form glassy deposits.

It has also urged the evacuation of areas within 14km of the volcano. The graphic below shows how the movement of the Earth's tectonic plates causes volcanoes to be formed, and what triggers a ...

forming deep trenches like the Mariana Trench in the North Pacific Ocean, the deepest point on Earth. These types of collisions can also lead to underwater volcanoes that eventually build up into ...