volcanoes 4.6 vocab

Question 1

areas of earth’s surface through which magma and volcanic gases pass.

Answer 1

volcano

Question 2

a body off molten rock deep underground that feeds a volcano.

Answer 2

magma chamber

Question 3

magma rises from the magma chamber through cracks in the earth’s crust to openings.

Answer 3

vent

Question 4

funnel-shape pit near the top of the central vent of a volcano.

Answer 4

crater

Question 5

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

Answer 5

caldera

Question 6

a wide, flat land form that results from repeated nonexplosive eruptions of lava that spread over a large area.

Answer 6

lava plateau

Question 7

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

Answer 7

rift zone

Question 8

a volcanically active area of Earth’s surface far from a tectonic plate boundary.

Answer 8

hot spot