Lesson 6 Flashcards
1
Q
volcano
A
a vent or fissure in the Earth’s surface through which magma and gases are expelled
2
Q
magma chamber
A
the body of molten rock that feeds a volcano
3
Q
vent
A
an opening at the surface of the Earth through which volcanic material passes
4
Q
crater
A
a funnel-shaped pit near the top of the central vent of a volcano
5
Q
caldera
A
a large, semicircular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink
6
Q
rift zone
A
an area of deep cracks that forms between 2 tectonic plates that are pulling away from each other
7
Q
hot spot
A
a volcanically active area of Earth’s surface far from a tectonic plate boudary
