Help
Options
Question
active volcano
click to flip
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't know
Question
dormant volcano
Remaining cards (101)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
science test 223
| Question | Answer |
|---|---|
| active volcano | a volcano that currently vents lava or gases |
| dormant volcano | a volcano that is not currently erupting but is likely to erupt in the future |
| extinct volcano | a volcano that is no expected to erupt again |
| cinder cone volcano | a volcano that is composed of both solidified lava and pyroclastic materials |
| shiield cone volcano | huge, built mainly from lava, sloping sides |
| volcanic neck | solidified magma that originally filled the vent or neck of an ancient volcano and has been exposed eruption |
| lava dome | roughly circular mound shaped protrusion resulting from the slow extrusion of viscous lava from a volcano |
| lava | rock that in its molten form (magma) issues from volcanoes, lava is what magma is called when it reaches the surface |
| tephra | solid material thrown into the air by a volcanic eruption |
| aa lava | blackly basalt lava |
| pahoehoe lava | smooth unbroken lava |
| fissure eruption | volcanic eruption where lava wells up through fissures in the earth's crust |
| quiet eruptions | eruptions that are quiet |
| explosive eruption | volcanic term to describe a violent, explosive type of eruption |
| basalt plateau | an extensive, thick, smooth flow or succession of flows of high temperature, fluid basalt erupted from fissures, flooding topographic lows, and accumulated to form a plateau |
| crater | the cup shaped depression or cavity on the surface of the earth or other heavenly body marking the orifice of a volcano |
| vent | an opening, as in a wall, serving as an outlet for air, smoke, fumes |
| fumarole | a hole in or near a volcano, from which vapor rises |
| sill | a tabular body of intrusive igneous rock, ordinarily betweens beds of sedimentary rocks or layers of volcanic ejects |
| dike | a long narrow cross cutting mass of igneous rock intruded into a fissure in older rock |
| laccolith | see lopolith a dome shaped body of igneous rock between to layers of older sedimentary frock: formed by the intrusion of magma, forcing the overlying strata into the shape of a dome |
| dome mountain | magma cooled and hardened beneath the earth's surface to become later exposed |
| batholith | a large body of intrusive igneous rock believed to have crystallized at a considerable depth below the earth's surface; pluton |
| magma chamber | a reservoir of magma in the earth's crust where the magma may reside temporarily on its way from the upper mantle to the earth's surface |
| geyser | a hot spring that intermittently sends uup fountain ike jets of water and steam into the air |
| hot spring | a natural spring of mineral water found in areas of volcanic activity |
| viscosity | the property of a fluid that resists the force tending to cause the fluid to flow |
| granitic magma | a coarse grainded igneous rock |
| basaaltic magma | fluid rock material of basaltic origin |
| hot spot | (land and sea floors) under continents |
| hot spot volcano | region on the earth's surface that has experienced volcanism for a long time |
| what is a volcano | a volcano is a weak in the crust where moten material, or magma comes to the surface |
| a molten mixture of rock-forming substanses,gases, and water from the mantle is referred to as | magma |
| when magma reaches the surface, it is called | lava |
| what is the ring of fire | one major volcanic belt formed by many volcanos that rim the pacific ocean |
| where do most colvanoes form | colvanic belts form along thhe boundaries of earth's plate |
| descrive how volcanoes form along the mid-ocean ridges | lava pours out of the cracks on the ocean floor |
| true or false? volcanoes can form along diverging plate boundaries on land | true |
| true or false? many volcanoes form near converging plate boundaries where oceanic crust returs to the mantle | true |
| how does subduction at converging plate boundaries lead to the formation of volcanoes | volcanoes may form where tow oceanic plates collide or where an oceanic plate collides with a continental plate |
| volcanoes at boundaries where two oceanic plates collide creat a string of islands called an | island arc |
| what are three major island arcs | japan, new zealand, indonesia, philippines, aleutians, carribean islands |
| what types of plates collide to form the andes mountains on the west coast of south america | continental plate and an oceanic plate |
| what is a hot spot | an area where material from deep within the mantle rises and melts, forming magma |
| how did the hawaiian islands form | pacific plate drifited over a hot spot |
| true or false? hot spots form only under oceanic crust | false |
| a substance that cannot be broked down into other substances is called an | element |
| true or false? when forzed water melts, it is undergoing a physical change | true |
| the great the viscosity, the......a liquid flows. the....... the viscosity, the more easily a liquid flows | slower, lower |
| what liquids that have a relatively low viscosity | milk, orange juice |
| what factors determine the viscosity of magma | depends upon it's silica content and temprature |
| what is true about silica | it makes magma thicker, produces light-colored lava |
| the rock.....forms from light-colored lava | chyolite |
| low-silica magma forms rocks like | basalt |
| what happens to viscosity as temperature increases | hotter-lower, cooler-slower |
| hot, fast-moving lava is called | pahoehoe |
| cool, slow-moving lava is called | AA |
| true or false? magma forms in the lithosphere | false |
| true or false?liquid magma rises until it reaches the surface, or until it becomes trapped beneath layers or rock | true |
| what features do volcanoes share | pocket of magma beneath the surface, side vents, craters |
| what is lava flow | the area covered by lava as it purs out of a vent |
| where does a crater form | on the top of a volcano around central vent |
| true or false?the pipe of a volcano is a horizontal crack in the crust | false |
| how does a volcano erupt | carbon dioxide dissolved in soda pop rushes out when the pop is opened |
| what happens during a volcani eruption | dissolved gases are trapped in magma, then as magma rises toward the surface, the pressure of the surrounding rock of magma decreases |
| what factors determine the force of a volcanic eruption | expanding gases |
| true or false?a volcano erupts quietly if its magma is thick and sticky | false |
| volcanic ash | fine rocky particles as small as a speck of dust |
| cinders | pebble sized particles |
| bombs | particles ranging from the size of a baseball to the size of a car |
| what is pyroclastic flow | it is something that happens when an explosive eruption hurls out a mixture of hot gases ash cinders and bombs |
| true or false?volcanic eruptions cause damage only when they are close to the crater's rim | false |
| what kidns of damage can colvanoes cause | can bury everything in itsd paths and can cover large areas with lava, burty towns, bleach out hot clouds of deadly gases as well as ash cinders, and bombs |
| true or false?the activity of a volcano may last from less thatn a decade to more thann 10 million years | true |
| true or false?most long-lived volcanoes erupt continuously | false |
| extinct | unlikely to erupt ever again |
| active | erupting or showing signs that it soon will erupt |
| dormant | no longer active buy may become active again |
| rank the volcanic stages from least likely to erupt to most likely to erupt | extinct,dormant,active |
| true or false?the length of time beetween eruptions of a dormant volcano is always less thatn a thousand years | false |
| why might people living near a dormant volcano be unaware of the danger | because since it has erupted a long time ago they don't thing of it erupting again and hurting people and things |
| how can we predict eruptions | geologists are more successful in predicting volcanic eruptions than earthquakes, geologists cannot predict what type of eruption a volcano will produce |
| list four landforms created from lava and ash | sheild volcanos,cinder cone volcano, composite volcanos, lava plateaus |
| true or false?the hawaiian islands are cinder cone volcanoes | false |
| name two examples of composite volcanoes | mount fiji and mount st. helens |
| true or false?a composite volcano has both quiet and explosive eruptions | true |
| sheild volcano | gently sloping mountain formed by repeated lava flows |
| cinder cone | fone shaped mountain formed from ash, cinders, bombs |
| composite volcano | mountain formed by lava flows alternating withh explosive eruptions |
| lava plateau | high, level area formed by repeated lava flows |
| caldera | hole left by the collapse of a volcanic mountain |
| when volcanic ash breaks down, it realses.....and.....both of which are needed by plants | potassium, phosphurus |
| list five features formed by magma | volcanic necks, dikes, sills, batholiths,bome mountains |
| dikes are.. | across rocks |
| sill is... | inbetween rocks |
| a mass of rock formed when a large body of magma cools inside the crust is called | batholith |
| what is an example of a btholith in the united states | half done in yosemite national park |
| true or false?a dome mounain forms when hardened magma is uplifted and pushes up horizontal layers of rock | true |
| true or false?some types of volcanic activity do not invlove the eruption of lava | true |
| when groundwater heated by a nearby body of magma rises to the surface and collects in a natural pool, it is called | hot spring |
| a fountain of water and steam that erupts from the ground is referred to as a | geyser |
| how can geothermal energy be converted to electricity | steam can be piped into bines and creates energy |
Created by:
mackidoo