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41 Cards in this Set
- Front
- Back
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Molten Rock
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magma
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Lava
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Magma that flows on the earth surface
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Ash
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Dust-sized particles of hardened lava
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Pyroclastic material
Volcanic bombs |
Magma that is blasted into the air and hardens
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Volcano
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A landform caused by repeted eruptions of lava
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Vent
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a crack or opening in the earths crust
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Calm lava flows
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What you would see in a nonexplosive eruption
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Pillow Lava
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forms when lava erupts under water
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Lava with high viscosity
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Is thick like pudding
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Crater
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A funnel shaped pit near a volcano's central vent
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Rift's
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Long cracks in the earth's crust
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Caldera
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a large semicircle depression over a magma chamber
Is wider than it is deep |
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Lava Plateau
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A wide, flat landform; usually covers a large area
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Subduction
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Movement of one tetnonic plate under another
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Dormant Volcano
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might errupt again
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Extinct Volcano
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Will probably never errupt again
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Active Volcano
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Currently erupting or will erupt very soon
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Mid Ocean Ridge
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Underwater volcanoes and mountains
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Divergent Boundry
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Where tectonic plates separate
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Rift Zone
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A set of deep cracks between tectonic plates
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Convergent boundry
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Where tectonic plates collide
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Mantle Plumes
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columns of rising magma
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Hot Spot
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A volcanically active area that is not near a tectonic plate boundry
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Ring of Fire
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The earthquake and volcano zone surrounding the Pacific Ocean
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Volcanic dust
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Fine rock particles that can circulate in the atmosphere for years
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volcanic bomb
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The largest rock particles blown into the air from eruption
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volcanic ash
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rock particles SMALLER than cinders but LARGER than dust
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crater
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A funnel shaped pit at the top of a volcanic cone
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fault
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A break along which rock moves
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tsaunami
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A giant sea wave
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cinder cone
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A volcano consisting mostly of cinder from violent explosive eruptions
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epicenter
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On the surface above the focus where an earthquake occurs
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cinder
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small volcanic bombs
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vent
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The opening of the volcano
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focus
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The underground point of origin of an earthquake
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Magma
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Molten rock BENEATH the Earth's surface
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stress
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Forces from the interior of the earth that deform the earth's surface
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pyroclastic flow
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Explosive eruptions of dust. ash, cinders, bombs, gas, and heat from a volcano
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Mid Atlantic Ridge
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Earthquakes and volcano zone located in the center of the Atlantic Ocean
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Composite Volcano
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A volcano built from ALTERNATING layers of lava and rock particles
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shield volcano
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A volcano composed of quiet, calm lava flows
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