Skip to content

video not played or not found error
click on direct switch

Hosted by Dailymotion. For legal issues: Copyright Center · DMC · Instant Removal

Volcanoes

A
AFP English

14 Views • Jul 10, 2015

Description

Constantly moving on a hot bed of magma, volcanoes form in two ways at their boundaries. Plates sometimes collide, causing one to slide beneath the other. This is called a destructive boundary. Pressure and heat created by this movement forces magma up into cracks in the rocks until it explodes to the surface, as lava, causing a volcanic eruption. VIDEOGRAPHIC