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| A broad expanse basalt lava cooled to fill in low lying areas of the landscape |
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| A bulge in a caldera where magma rose and which may or mat not develop into a new volcano |
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| A depression created as ash blasts out of a volcano. |
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| A fast moving avalanche or rockfall of loose debris flows out a considerable distance from its original source; often very destructive |
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| A flow of mud and rocks, and water dominated by clay, or mud-sized particles. |
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| A large ash rich eruption that produces pyroclastic flows |
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| A large bulge or protrusion, either extremely viscus or solid on the outside and pushed up by magma. |
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| A large depression, generally more than 1 kilometer across in the summit of a volcano and formed by collapse into the under lying magma chamber. |
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| A large steep-sided volcano consisting of layers of as, fragment debris, and lava; Aka Composite volcano. |
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| A mixture of hot volcanic, coarse Particles, and steam that pours at high velocity down the flank of a volcano, aka nuee ardente or ash flow |
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| A mountain formed by volcanic eruption |
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| A rock deposited from particles in water, ice, or air. ex sandstone, shale, and limestone. |
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| A rock formed by consolidation of volcanic ash |
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| A scale of volcanic eruption violence based on volume, height, and duration of an eruption. |
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| A small Steep-sided volcano consisting of basaltic cinders |
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| A style of volcanic eruption that is more violent than strombolian and less violent than pelean. |
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| A volcano eruption dominated by steam |
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| An acidic volcanic smog produced when volcanic gases react with moisture and oxygen in the air, and Sun, to produce aerosols. |
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| An elongate spreading zone in the earths lithosphere. |
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| An extremely large basalt lava volcano with gently sloping sides, such as those in Hawaii. |
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| An intermetiate colored, fine grained volcanic rock. It has a silica content of 60%. Intermediate viscosity and forms sow moving lavas, fragments & volcanic ash. |
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| An isolated volcano, typically not on a lithospheric plate boundary, but lying above a plume |
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| Basalt lava, with a ropy or smooth top |
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| Basalt that flows into water or wet mud chills on its outside surfaces to form elongate rounded fingers of basalt, a meter across |
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| Black or dark colored fine grained volcanic rock. It has a silica content of 50 % and low viscosity and can flow down slope rapidly. |
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| Blocky basalt flow with a ragged clinkery surface |
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| Dissolved gas in a volcano |
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| Extremely large volcanic eruptions that involve continuous blasts of ash. Ex Vesuvius in 79 A.D. and Mount St Helens 1980 |
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| Fragment material blown out of a volcano; Ex Ash, Cinders, and Bombs. |
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| Frequent mild eruptions of basalt or andesite cinders, typically forming a cinder cone. |
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| Harmonic earthquake tremors, changes in ground surface level, changes in eruptive gases. |
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| High-speed ash-rich shock wave |
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| Large masses of molten magma that rises through the earths crust, often erupting at the surface to build a volcano |
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| Large rhyolite volcanoes characterized by their high volatile content, but having gently sloping flanks |
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| Lava that spills out of a volcano and flows down its sides |
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| Magma that flows out onto ground surface |
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| Rhythmic shaking of the ground that often accompanies magma movement under a volcano. |
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| Rocks if any kind that have been changed by heat or pressure |
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| Sub-sea level collapse of sediment and rock, such as the flank of an oceanic volcano; ex Hawaii or the canary islands. |
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| What are the tectonic settings of magmatisum |
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| Subduction Zones, Continental Rifts Zones |
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| What are the various melting mechanisms |
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| Tempeture, Decreased pressure, water |
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| The Alert issued when a magnitude 7 or larger earthquakes is detected somewhere around the pacific ocean or some other ocean that may see dangerous tsunamis. |
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| The Height to which water at the leading edge of a wind wave or tsunami rushes up onto shore |
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| The distance from crest to crest. |
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| The line along a mountainside along which tall trees in the forest up slope are bounded by distinctly shorter trees down slope; sometimes indicating tsunami damage. |
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| The reagion above a subduction zone in which the over lying continental plate flexes upward before slip on the subduction zone causes a major earthquake. |
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| The resistance flow of a fluid because of internal friction. |
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| The study of former volcanic events from examination of former volcanic deposits |
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| The time between water waves |
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| What are two examples of two U.S. convergent Boundaries |
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| Weather generated during a volcanic eruption. high temp above an erupting volcano draws the outside air that rises and cools. moisture in the air condenses to form rain & stormy weather. |
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| When a significant tsunami is identified, officials order evacuation on endangered low lying coast. |
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| a light colored fine-grained volcanic rock. has a silica content of 70% and high viscosity. It generally erupts as volcanic ash and fragments. |
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| an abnormal long wave length produced by sudden displacement of water in response to sudden fault movement on the seafloor; can also form a landslide volcanic eruption, or asteroid impact. |
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| distinctly grainy igneous rock that solidified slowly below the earths surface. it contrasts with volcanic rock that are fine-grained and solidified rapidly at the surface. |
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| fine-grained and solidified rapidly at the surface. |
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rocks that crystallize from molten magma either within earth as plutonic rock.
(ex. granite & gabro)or at the surface as volcanic rock ex Rhyolite, Andesite, and Basalt |
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| temperature at which a rock metls; Granite 700-900C, Basalt 1200-1400C |
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