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- 1. Multiple ChoiceVolcanoes that are made of basalt lava flows are called _____.shield volcanoescomposite volcanoesstratovolcanoescone volcanoes
- 2. Multiple ChoiceA line of volcanic activity that surrounds the Pacific Ocean basin is the
Ring of FireAleutian IslandsHawaiian IslandsCaribbean Islands - 3. Multiple ChoiceBefore lava reaches the surface it is calledrockmagmavolcanic ashliquid fire
- 4. Multiple ChoiceIf geologists detect many small earthquakes in the area near a volcano, what can they infer about the volcano?It is dormantIt is probably about to eruptIt is extinctIt is a good source of geothermal energy
- 5. Multiple ChoiceWhat provides the force that causes magma to erupt to the surface?the silica in the magmadissolved gases trapped in the magmagravity in the lithospherethe density of the magma
- 6. Multiple Choice
Once magma reaches the earth's surface it is called.....SilicaRocklava - 7. Multiple ChoiceAn explosive eruption occurs if magma islow in viscosityhigh in silicavery thin
- 8. Multiple ChoiceA volcano that is no longer erupting but likely to erupt again in the future isExtinctDormantActive
- 9. Multiple ChoiceWhat forms when magma hardens in the pipe of a volcano?SillDikeVolcanic Neck
- 10. Multiple ChoiceWhen a volcano erupts quietly, what kind of mountain forms?A Shield VolcanoCinder Cone VolcanoComposite Volcano
- 11. Multiple ChoiceA volcano that no longer will erupt is said to beExtinctDormantActive
- 12. Multiple ChoiceA huge hole that is left behind when a volcano collapses is called aBatholithCalderaGeyser
- 13. Multiple ChoiceTRUE or FALSE: a volcano that erupts quietly will produce cinders, ash, and bombs.TrueFalse
- 14. Multiple ChoiceTRUE or FALSE: A dike forms when magma hardens in rocks in an up and down layer.TrueFalse
- 15. Multiple ChoiceVolcanoes are common along oceanic trenches because this is wheremost hotspots are found.subduction occurs.new seafloor forms.none of the above
- 16. Multiple ChoiceVolcanoes are likely along the San Andreas fault in California because it is a convergent plate boundary.TrueFalse
- 17. Multiple ChoiceWhich process of volcano formation is represented in the figure?hot spotsconvergent boundariesdivergent boundariesland locked land masses
- 18. Multiple ChoiceMelted rock underground is also calledlavamagmarock souplithosphere
- 19. Multiple ChoiceThe Hawaiian Islands are formed on top of ahot zoneeruption zoneplate boundaryhot spot
- 20. Multiple ChoiceWhere is Mt. St. Helens?HawaiiItalyWashingtonAtlantic Ocean
- 21. Multiple ChoiceThis kind of volcano alternates between explosive and non-explosive eruptions, it has a wide base, and are very common around the "Ring of Fire".Shieldcompositecinder cone
- 22. Multiple ChoiceWhich volcano is created by the build up of ash, cinders, and bombs?cinder coneshieldHawaiiComposite
- 23. Multiple ChoiceLiquid magma flows upward through cracks in rock because it ishighly fluidless dense than the surrounding solid materialhighly magneticmore dense than the surrounding solid material
- 24. Multiple ChoiceThe long tube in the ground that connects the magma chamber to Earth's surface is called theventside ventpipecrater
- 25. Multiple ChoiceIf a volcano's magma is high in silicia, the volcano will probablyerupt quietlyremain dormanterupt explosivelyproduce dark color lava
- 26. Multiple ChoiceWhich of the following volcano hazards is made up of rocky particles about the size of a grain of sand?volcanic bombspahoehoevolcanic cindersvolcanic ash
- 27. Multiple ChoiceThe main hazard from a quiet volcanic eruption isvolcanic bombslava flowsvolcanic cindersvolcanic ash
- 28. Multiple ChoiceWhat is the landform that forms when rising magma, blocked by layers of rock, forces the layers of rock to bend upward?volcanic neckdikelava plateaudome mountain
- 29. Multiple ChoiceThe volcanoes along converging oceanic plate boundaries may forma hot spota part of the mid-ocean ridgean island arca subducting plate
- 30. Multiple ChoiceA mass of rock formed when a large body of magma cools inside the crust is called aneckdikelava plateaubatholith
- 31. Multiple ChoiceThe huge hole left by the collapse of a volcanic mountain is called alava plateaucalderacinder coneshield volcano
- 32. Multiple ChoiceWhich of the following helps to determine how easily magma flows?the amount of silica in the magmathe diameter of the pipethe size of the craterthe number of vents on the volcano
- 33. Multiple Choicea volcano erupts quietly if its magma is which of the followingcoolsolidlow in silicahigh in silica
- 34. Multiple ChoiceWhich is a wide, gently sloping mountain formed by thin layers or lava that pour out of a vent and harden on top of previous layers?cinder conecompositeshielddome mountain
- 35. Multiple ChoiceA volcano that is erupting or has shown signs that it may erupt in the future is called _____.sleepingextinctactivedormant
- 36. Multiple ChoiceIn sea floor spreading, molten material rises from the mantle and erupts along a what?Rift ValleyDeep Ocean TrenchMid-Ocean RidgeRing of Fire
- 37. Multiple ChoiceThe process where the ocean plate sinks beneath the continental plate and into a trench is called.......ConvergenceSubductionMid-Ocean RidgeSublimation
- 38. Multiple ChoiceWhat happens when oceanic crust hits continental crust?Ocean crust will subduct because it is more denseA mountain will formIt will combineThe continental crust will sink
- 39. Multiple ChoiceWhat type of volcano is this?Shield VolcanoComposite VolcanoCinder Cone
- 40. Multiple ChoiceWhat type of volcano is this?Shield VolcanoComposite VolcanoCinder Cone
- 41. Multiple ChoiceWhat type of volcano is this?Shield VolcanoComposite VolcanoCinder Cone
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