Volcanoes (Plate Tectonics 2)

A mountain having a crater or vent through which lava, rock fragments, hot vapor, and gas are being erupted from the earth's crust. It may not be currently erupting, but it will erupt soon.

• vent

• dormant volcano

• mesosphere

• active volcano

Tags

NGSS.MS-ESS3-2

Broad, with gently sloping sides, built by nonexplosive eruptions of basaltic lava that accumulates in layers.

• dormant volcano

• cinder cone volcano

• shield volcano

• composite volcano

The rocky outer part of the Earth. It is made up of the brittle crust and the top part of the upper mantle. “The coolest and most rigid part of the Earth.”

• vent

• asthenosphere

• mesosphere

• lithosphere

It encompasses the lower mantle, where material still flows, but at a much slower rate than the above layer. It makes up most of the volume of the mantle. “Lower part of the mantle, makes up most of the mantle.”

• vent

• asthenosphere

• mesosphere

• lithosphere

The upper layer of the earth's mantle. This layer is flexible and is the layer that produces volcanoes. It is much hotter and more fluid than the above layer. “Flexible and it produces volcanoes.”

• vent

• asthenosphere

• mesosphere

• lithosphere

The opening through which molten rock and gas leave a volcano.

• vent

• lava tube

• ventilator

• escape hole

This certain type of thing has not erupted for a long time, but may erupt again one day.

• vent

• dormant volcano

• mesosphere

• active volcano

A steep, cone-shaped hill or small mountain made of ash piled up around its opening.

• dormant volcano

• cinder cone volcano

• shield volcano

• composite volcano

Built by alternating explosive and quiet eruptions that produce layers of lava; found mostly where there is subduction in Earth’s plates. It has a more traditional “mountain” shape.

• dormant volcano

• cinder cone volcano

• shield volcano

• composite volcano