This HTML5 document contains 5 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

Subject Item

n2:

rdfs:label

How is a volcano made

rdfs:comment

Volcanism typically occurs at the edge of tectonic plates. If the plates are oceanic and move away from each other, low–density basalt lava floats up in the gap and forms undersea mountain ranges. If the two oceanic plates move towards each other, volcanic archipelagos containing a tad of sediments are created.

dcterms:subject

n4: n6:

n5:abstract

Volcanism typically occurs at the edge of tectonic plates. If the plates are oceanic and move away from each other, low–density basalt lava floats up in the gap and forms undersea mountain ranges. If the two oceanic plates move towards each other, volcanic archipelagos containing a tad of sediments are created. During the collision of an oceanic and a continental plate, the former submerges beneath the latter in a process called subduction. The plate melts in the depth and moves up through the continental layers, which results in denser lava of minerals like andesite and tall, layered volcanoes.