a vent or fissure in the Earth's surface through which magma and gases are expelled
the body of molten rock that feeds a volcano
an opening at the surface of the Earth through which volcanic material passes
a funnel-shaped pit near the top of the central vent of a volcano
a large, semicircular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink
a wide, flat landform that results from repeated nonexplosive eruptions of lava that spread over a large area
an area of deep cracks that forms between two tectonic plates that are pulling away from each other
a volcanically active area of Earth's surface far from a tectonic plate boundary
magma that flows onto the Earth's surface
dust-sized particles blown into the atmosphere by volcanic eruptions
volcanic rock that can actually float in water
material formed when magma is blasted into the air and hardens
produced when enormous amounts of hot ash, dust, and gases are ejected from a volcano
another name for composite volcanoes
long cracks in the Earth's surface
Ring of Fire
chain of volcanoes surrounding the Pacific Ocean
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