Volcanoes

Question 1

Divergent plate boundary

Answer 1

Where tectonic plates are pulled apart allowing molten rock to the emerge at the emerge at the earth’s

Question 2

Vent

Answer 2

Opening in a volcano through which molten, rock and gas can escape

Question 3

Ring of fire

Answer 3

Volcanoes which have formed around the pacific rim

Question 4

Hotspot

Answer 4

An area where mantle has melted resulting in rising magma

Question 5

Magma

Answer 5

An area where mantle has melted resulting in rising magma

Question 6

Pyroclastic flow

Answer 6

Mixture of rock, ash, gases and water that moves rapidly down slope

Question 7

Caldera

Answer 7

Large, basin shaped depression

Question 8

Pangaea

Answer 8

Wegner’s parent landmass (super continent)

Question 9

Lava dome

Answer 9

A mound of viscous lava

Question 10

Sea floor spreading

Answer 10

Separation of tectonic plate on the floor of the ocean

Question 11

Plate tectonic theory

Answer 11

The idea that earth’s outer shell is divided into several plates. They glide over one another

Question 12

Transform plate boundaries

Answer 12

Where plates slide past each other. Found on sea floor

Question 13

Volcanology

Answer 13

The study of volcanoes and the assimilated geomorphic processes

Question 14

Lithosphere

Answer 14

One of the earth’s four spheres. Consists of the crust and mantle

Question 15

Phreatic eruption

Answer 15

Steam driven explosions, occur when ash and steam are forced out of vents