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10 Cards in this Set

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  • Back
Magma
molten rock beneath the earth’s surface.
Lava
molten rock at the earth’s surface.
Volcanic Dust
smallest rock particles blown into the air by a volcanic eruption.
Volcanic Ash
rocks, particles more than 0.25mm but less than 5mm across that are blown into the air by a volcanic eruption.
Volcanic Bomb
rock particles larger than 5mm in diameter that are blown into the air by a volcanic eruption.
Cinder Cone
volcano made mostly of cinders and other rock particles that have been blown into the air.
Shield Volcano
gently sloping volcano formed when runny lava flows over a large area.
Composite Volcano
volcano built of alternating layers of rock particles and lava.
Crater Funnel
shaped pit or depression at the top of a volcanic cone.
Caldera
large crater formed when the sides of a volcanic cone collapse.