Earthquakes. A short video for 11-14 year old pupils, exploring tectonic activity and earthquakes and featuring case studies ...

Four types of plate tectonic ... a divergent boundary occurs where two plates move apart, allowing magma, or molten rock, to rise from the Earth's interior to fill in the gap.

Plate tectonics is the theory that Earth's outer layer is made up of plates ... plate tectonic activity takes place at four types of boundaries: divergent boundaries, where new crust is formed ...

This program explores the composition of our Earth, and delves deep into the tectonic plates, their history and the different types of processes and landforms that occur at each boundary. Watch all ...

When the plate sinks into the mantle it melts to form magma. The pressure of the magma builds up beneath the Earth's surface. The magma escapes through weaknesses in the rock and rises up through ...

New research suggests that Earth's first crust, formed over 4.5 billion years ago, already carried the chemical traits we associate with modern continents. This means the telltale fingerprints of ...

These types of collisions can also lead to underwater volcanoes that eventually build up into island arcs like Japan. At divergent boundaries in the oceans, magma from deep in the Earth's mantle ...