Chapter 9- Volcanos

Question 1

Magma chamber

Answer 1

The body of molten rock that feeds a volcano

Question 2

Vent

Answer 2

An opening at the surface of the earth though which volcanic material passes.

Question 3

Crater

Answer 3

A funnel-shaped pit near the top of the central vent of a volcano

Question 4

Caldera

Answer 4

A large, semicircular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink

Question 5

Lava plateau

Answer 5

A wide, flat landform that results from from repeated nonexplosive eruptions of lava that spread over a large area

Question 6

Rift zone

Answer 6

An area of deep cracks that forms between two tectonic plates that are pulling away from each other

Question 7

Hot spot

Answer 7

A volcanically active area of earths surface far from a tectonic plate boundary

Question 8

Volcano

Answer 8

A vent or fissure in the earths surface thought which magma and gases are expelled