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

This volcanic arc delineates the boundary between ... earth's interior causes the plate to begin melting, and buoyant liquid magma rises to the surface forming a line of volcanoes.

The abrupt motion of the rock causes ... by volcano-tectonic earthquakes look like those produced by typical earthquakes (those caused by the motion of tectonic plates at plate boundaries, such ...

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

In regions of convergence, one plate can sink under another in a subduction zone, or two colliding plates can form a mountain belt. At divergent boundaries ... of the volcanoes observed in ...

Convection processes beneath Venus' scorched surface may help explain the planet's many volcanoes ... polygonal surface features resembling plate boundaries on Earth, according to the statement.

Most constructive plate boundaries are found on ocean floors. Some of these undersea volcanoes become so large ... move towards each other - this can cause fold mountains and earthquakes.

The tiny Juan de Fuca plate is largely responsible ... can also lead to underwater volcanoes that eventually build up into island arcs like Japan. At divergent boundaries in the oceans, magma ...