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30 Cards in this Set
- Front
- Back
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Fissure |
a long, narrow opening or line of breakage made by cracking or splitting, especially in rock or earth. |
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Active Volcano |
a volcano that has had at least one eruption during the past 10,000 years.
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Dormant Volcano |
an active volcano that is not erupting, but supposed to erupt again.
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Effusive Eruption |
a type of volcanic eruption in which lava steadily flows out of a volcano onto the ground.
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Extinct Volcano |
would be one that nobody expects to ever erupt again.
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Lahar |
a destructive mudflow on the slopes of a volcano.
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Magma Chamber |
a large underground pool of liquid rock found beneath the surface of the Earth.
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Pyroclastic Flow |
a dense destructive mass of very hot ash,lava fragements and gases ejected explosively from a volcano and typically dense downslope at a great steep |
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Tephra |
rock fragments and particles ejected by a volcanic eruption.
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Viscosity |
the state of being thick, sticky, and semifluid in consistency, due to internal friction.
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Caldera |
a large volcanic crater, typically one formed by a major eruption leading to the collapse of the mouth of the volcano.
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Cinder Cone |
a cone formed around a volcanic vent by fragments of lava thrown out during eruptions.
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Composite Volcano |
is a conical volcano built up by many layers (strata) of hardened lava, tephra, pumice, and volcanic ash.
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Shield Volcano |
1. a broad, domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava. 2. |
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Super Volcano |
s any volcano capable of producing a volcanic eruption with an ejecta volume greater than 1,000 km3 (240 cu mi).
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Geyser |
a hot spring in which water intermittently boils, sending a tall column of water and steam into the air.
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Hot Spring |
a spring of naturally hot water, typically heated by subterranean volcanic activity.
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Lava Dome |
a mound of viscous lava that has been extruded from a volcanic vent
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Lava Plateau |
is a large, flat area of land created by lava filling in all the valleys and other depressions.
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Volcanism |
volcanic activity or phenomena.
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Quiet Eruption |
volcanic eruptions that explode gently, with broad sheets of slowly flowing lava.
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Igneous Rock |
formed through the cooling and solidification of magma or lava.
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Magma |
is a mixture of molten or semi-molten rock, volatiles and solids that is found beneath the surface of the Earth.
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Pyroclastic Material |
cloud of ash, lava fragments carried through the air, and vapor.
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Lava |
hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this.
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Lapilli |
rock fragments ejected from a volcano.
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Volcanic Dust |
powder-size to sand-size particles of igneous rock material that have been blown into the air by an erupting volcano.
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Volcanic Ash |
formed during explosive volcaniceruptions when dissolved gases in magma expand and escape violently into the atmosphere.
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Volcanic Bombs |
a lump of lava thrown out by a volcano.
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Volcanic Blocks |
a fragment of rock that measures more than 64 mm in diameter and is erupted in a solid condition.
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