Chapter 9 Flashcards
(8 cards)
What is the body of molten rock that feeds a volcano?
Magma Chamber
What is an opening at the surface of the Earth through which volcanic material passes?
Vent
What is a funnel-shaped pit near the top of the central vent of a volcano?
Crater
What is a large, semicircular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink?
Caldera
What is a wide, flat landform that results from repeated non explosive eruptions of lava that spread over a large area?
Lava Plateau
What is an area of deep cracks that forms between two tectonic plates that are pulling away from each other?
Rift Zone
What is a volcanically active area of Earth’s surface far from a tectonic plate boundary?
Hot Spot
What is a vent or fissure in the Earth’s surface through which magma and gases are expelled?
Volcano
