Lesson 5 -- Volcano Vocabulary

A theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle.

• Plate Tectonic Theory

• Big Bang Theory

• Atomic Theory

• Germ Theory of Disease

Tags

NGSS.MS-ESS2-3

Locations on our planet where lithospheric plates are moving towards one another. The plate collisions that occur in these areas can produce earthquakes, volcanic activity, and crustal deformation.

• Divergent Plate Boundary

• Convergent Plate Boundary

• Transform Boundary

• Hot Spot

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

Locations where plates are moving away from one another. This occurs above rising convection currents. The rising current pushes up on the bottom of the lithosphere, lifting it and flowing laterally beneath it.

• Divergent Plate Boundary

• Convergent Plate Boundary

• Transform Boundary

• Hot Spot

Tags

NGSS.MS-ESS2-3

A geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle.

• Plate Tectonics

• Hot Spot

• Subduction Zone

• Spreading Ridge

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

The fracture zone along the ocean bottom where molten mantle material comes to the surface, thus creating new crust.

• Plate Tectonics

• Divergent Boundary

• Subduction Zone

• Spreading Ridge

A volcanic rock. It is fine-grained because it forms by the rapid cooling of magmas usually when it erupts onto the Earth's surface and forms lava flows.

• Basalt

• Andesite

• Rhyolite

• Quartz

A volcanic dark grey to black rock formed by the rapid cooling of lava, equivalent to gabbro-norite magma, from interior of the crust and exposed at or very close to the surface of Earth. The flows are quite thick and extensive, in which gas cavities are almost absent.

• Basalt

• Andesite

• Quartz

• Rhyolite