100 MCQs About Natural Disasters

100 MCQs About Natural Disasters

1. Which disaster are most likely to extinguish the human race? – Volcanoes and extraterrestrial impacts

2. What’s the smallest asteroid or comet that could cause devastating effects for humanity? – 1 kilometer wide – the equivalent of about a 10-minute walk

3. What is the biggest coronal mass ejections (CME) on record to hit Earth? – The arrington Event

4. What is the chance that a Carrington-like storm will hit in the next ten years? – 12 %

5. Which of these events may have been responsible for nearly wiping out the human race? – A supervolcano

6. How far does a supervolcano’s incineration zone extend? – 100 Kilometers

7. Where is the world’s biggest earthquake machine located? – Miki, Japan

8. What, according to some scientists, is the ideal post apocalyptic food? – Mushrooms

9. At No. 1 on the list, _____ are the most common natural disaster. – Floods

10. Landslides, tsunamis and avalanches can all be caused by what other natural disaster? –Earthquakes

11. Which volcanic feature is the deadliest?The flow of ash, rock and gasses moving down a volcano’s side

12. The deadliest natural disaster in U.S. history was a _____ that hit Galveston, TX in 1900, killing about 7,000 people. – Hurricane

13. What makes a tornado dark colored? – The dirt and debris it sucks up

14. One of America’s worst natural disasters occurred in 1980, when a _____ damaged much
of the southern U.S. – Heat Wave

15. Below average rainfall for a prolonged period of time is called – Drought

16. What is a Tsunami? – A large wave usually formed by undersea earthquakes and landslides.

17. A sudden movement in the earth’s crust caused by movements of tectonic plates is called? – An earthquake

18. What is a natural disaster? – When a natural hazard impacts on the community causing destruction of property and loss of life.

19. The phenomenon of unusually cool ocean currents off the coast of Australia is called – El Nino

20. The social impacts of natural hazards include: – Loss of income to people or damage to an industry, illnesses cause by hazard, no form of communication

21. Natural Hazards can be separated into _________ and ________ categories. – Economic Impacts and Environmental Impacts

22. Indicates the severity of an earthquake in terms of the damage that it inflicts on structures and people – Intensity Scale

23. Boundary where plates are moving towards each other – Convergent

24. A fan shaped deposit of sand and gravel at the mouth of a mountain canyon where the stream gradient flattens at main valley floor – Alluvial Fan

25. A ground depression caused by collapse into an underground cavern – Sinkhole


100 MCQs About Natural Disasters

26. Volcanic dome composed of rhyolite and rhyodacite – Rhyolite Dome

27. Form as sediment is deposited in the slower waters on the inside of the meander bends – Point bar

28. The number peaks per second – Frequency

29. Record local and very strong earthquakes – Strong-motion Seismograph

30. A measure of the total energy expended during an earthquake; depends on its seismic moment determined by: rock shear strength, area of rock, average slip distance offset across the – Moment Magnitude

31. A landslide in which the mass rotates as it slides on a basal slip surface – Rotational Slide

32. Blocky basalt lava with a ragged clinkery surface – Aa Flow

33. Karst-like landscape in permafrost terrain caused by melting of thermofrost under increasing temperatures – Thermokarst

34. Flat-topped volcano formed by an eruption under a glacier – Tuya

35. Molten rock – Magma

36. Record both local and distant earthquakes; but cannot accurately measure strong earthquakes in the direct vicinity – Broadband Seismograph

37. A slurry of rock, sand, water flowing downslope; water usually makes up less than half of the flow volume –Debris Flow

38. Ice that crystallizes in pores between grains of sediment – Interstitial Ice

39. Developed 1953l based on maximum amplitude of earthquake waves recorded on a Wood Anderson Seismograph – Richter Magnitude Scale

40. The total area inundated by the tsunami – Run-out distance

41. The height to which a tsunami wave rushes up onshore – Run-up height

42. Rigid outer rind of Earth approximately 60-100km thick – Lithosphere

43. Maximum angle of which sediment particles can stand without falling (dependent on grain size, grain angularity, moisture content) – Critical Angle of Repose

44. Heavier sediment in a stream that is moved along the stream bed rather than in suspension – Bedload

45. Energy level between Richter Scale Units differs by ______ times – 31.5

46. A flow of mud, rock, and water dominated by clay-sized particles – Mud Flow

47. Rapid movement of land, ranging from cm/hr to m/s of material disappearing almost instantaneously – Collapse

48. Relatively flat lowland that borders a river usually dry but subject to flooding – Floodplain

49. Water saturated sediment jostled by an earthquake rearrange themselves into a closer packing arragement – Liquefaction

50. Where the earthquake actually happens in the earth’s crust, where energy is radiating out from all directions – Focus

51. A circular or oval feature resulting from the dissolution of rock – Doline

52. Natural & Human Created Hazard like floods, droughts, wildland fires, weather phenomena, landslides are called – Hydrometeorological Hazards

53. Type of collision forms continent volcanic arc of stratovolcanoes – Ocean-Continent

54. Basalt lava with a ropy or smooth top – Pahoehoe Flow

55. Magma that flows out onto the ground surface – Lava

56. Fragmental material blown out of a volcano (ex. tephra, cinders, and bombs) – Pyroclastic

57. A particle of volcanic ash between 2mm and 6mm across – Lapilli
58. Type of collision that forms oceanic island arc of basaltic volcanoes – Ocean-Ocean

59. Point where boundaries of 3 plates meet – Triple Junction

60. Natural Hazards like Earthquakes, Tsunami, Volcanic Eruptions, Asteroid/Comet Impacts, Landslides are called – Geophysical Hazard

61. Rapid discharge of water from an ice-dammed lake, typically resulting from a volcanic eruption – Jokulhlaup

62. Tsunami that strikes area adjacent to its point of origin – Near Field Tsunami

63. A broad expanse of basalt lava that cooled to fill in low-lying areas of the landscape – Flood Basalt

64. An extremely large basalt-lava volcano, gently sloping sides – Shield Volcano

65. Where the earthquake actually appears on the earth’s surface, sometimes there is a rupture at that point – Epicentre

66. Downslope creep driven by sequential freezing and thawing – Gelifluction

67. A huge collapse depression at the Earth’s surface that sank into a near-surface magma chamber during eruption of the magma – Resurgent Caldera

68. The length of a fault broken during an earthquake – Surface Rupture Length

69. Developed in 1902 by Giuseppe Mercalli – Mercalli Intensity Scale

70. Measure earthquakes quantitatively, independent of location and assigns a magnitude value based on energy released – Magnitude Scale

100 MCQs About Natural Disasters

71. Involves the movement of a slab of rock, debris, or cohesive mud as a single unit – Slide

72. The time between seismic waves – Period

73. Extremely rapid downslope movement of large volumes of rock and debris – Sturzstrom

74. Secondary/Shear waves that shake back and forth perpendicular to the direction of wave travel, cannot travel through a liquid (4.5km/s upper mantle, 3.5km/s crust) – S Wave

75. Used to measure earthquakes – Seismograph

76. The potential degree to which an individual or community could be affected by a natural hazard – Sensitivity

77. Records distant earthquakes – Long-period Seismograph

78. A river characterized by multiple, frequency shifting channels – Braided River

79. An ice jam initiated by rpaid change in temperature – Thermal Ice Jam

80. Extremely slow downslope flow of sediment on the surface – Creep

81. Slope of the river channel; typically decreases downstream – Gradient

82. A mudflow associated with volcanic action or involving volcanic materials – Lahar

83. Component of stress perpendicular to the earth’s planar surface (force keeping the boulder/grain from moving) – Normal Stress

84. A flow involving movement of broken rock, with little sand or mud, and particle-particle contact; usually developed in gravel or sand – Grain Flow

85. A mass of cold, solid rock ejected from a volcano – Block

86. Fine materials (dust, ash, and cinders) produced by volcanic action – Tephra

87. An elevation that a stream cannot erode past, controlled by level of the body of water which the stream discharges into – Base Level

88. A landslide that moves along a regular sloping planar surface – Translational Slide

89. Mineral composed of potassium chloride, a salt used in manufacturing fertilizer – Sylvite

90. Mineral or rock composed of sodium chloride; susceptible to dissolution – Halite

91. An event involving a significant number of people and/or significant economic damage – Disaster

92. The deepest parts of the channel along the length of the stream bed – Thalweg

93. Lenses of pure ice developed in permafrost sediment – Segregated Ice

94. An abnormally long wavelength wave produced by sudden displacement of water – Tsunami

95. Topographic line or boundary separating watersheds – Drainage Divide

96. Formed on the ceiling of a cavern when water percolates through fractures in limestone – Stalactite

97. A large steep-sided volcano consisting of layers of ash, fragmental debris and lava – Stratovolcanoes

98. The amount the fault or ridge moves away from its point of origin (aka displacement) – Offset

99. A mass of liquid of partially solidified rock that is ejected from a volcano – Bomb

100. Relatively slow movement of land, typically at rates of cm/yr – Subsidence


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