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Natural Hazards and Disasters Test - 1

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Natural Hazards and Disasters Test - 1
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Which of the following hazards is not entirely caused by nature?
    Solution
    Natural hazards are hazards which are caused because of natural phenomena (hazards with meteorological, geological or even biological origin). Examples of natural hazards are cyclones, tsunamis, earthquake and volcanic eruption, which are exclusively of natural origin. Landslides, floods, droughts and fires are socio-natural hazards since their causes are both natural and man-made.
  • Question 2
    1 / -0
    What does a seismograph measure?
    Solution
    A seismograph, or seismometer, is an instrument used to detect and record seismic waves. Seismic waves are propagating vibrations that carry energy from the source of an earthquake outward in all directions. They travel through the interior of the Earth and can be measured with sensitive detectors called seismographs. Seismograph measures the amount of energy released by an earthquake.
  • Question 3
    1 / -0
    'Willy-willy' is the other name for
    Solution
    Willy-willy is a tropical cyclone in Australia. It is an upward spiralling, dust filled vortex of air that may vary in height from a few feet to over 1,000. They are usually several metres in diameter at the base, then narrowing for a short distance before expanding again.
  • Question 4
    1 / -0
    The condition of absence/deficit of rainfall from the normal is known as
    Solution
    The condition of absence/deficit of rainfall from the normal is known as meteorological drought.
  • Question 5
    1 / -0
    Creep, Flows and Topple are the types of
    Solution
    Correct Answer: landslides
  • Question 6
    1 / -0
    The Severe Acute Respiratory Syndrome (SARS), one of the noted epidemics in human history, was caused by
    Solution
    Severe Acute Respiratory Syndrome (SARS) is a viral respiratory disease of zoonotic origin, which is caused by the SARS coronavirus.
  • Question 7
    1 / -0
    Shield volcano is mainly made up of
  • Question 8
    1 / -0
    Which of the following volcanoes is the most explosive?
    Solution
    Caldera is the most explosive volcano.
  • Question 9
    1 / -0
    Which of the following instruments is used to detect earthquakes?
    Solution
    A seismometer is an instrument that measures ground motions, such as caused by earthquakes, volcanic eruptions, and explosions. Records of seismic waves (seismograms) allow seismologists to locate and measure the size of events like these, and to map the Earth's internal structure.
  • Question 10
    1 / -0
    Which of the following areas is most susceptible to earthquakes?
    Solution
    Circum-Pacific belt (Ring of Fire) is most susceptible to earthquakes. Around 90% of the world's earthquakes and 80% of the world's largest earthquakes occur along the Ring of Fire.
  • Question 11
    1 / -0
    The science of study of soils is called
    Solution
    The science of study of soils is called Pedology. Pedology is the study of soils in their natural environment. It is one of two main branches of soil science,the other being edaphology. Pedology deals with pedogenesis, soil morphology, and soil classification, while edaphology studies the way soils influence plants, fungi, and other living things.
  • Question 12
    1 / -0
    Earthquakes along the Himalayas and its foothills are best explained in terms of
    Solution
    The junction of the India and Eurasia tectonic plates is the cause of earthquakes in the Himalayan region. The Indian plate is moving north under the Eurasian plate at a rate of 45mm a year, in a process which is known as thrust fault. Earthquakes in the Himalaya are bigger than in the Alps because tectonic plates collide faster. Earthquakes that happen in densely populated mountainous regions, such as the Himalaya, spell bigger earthquakes because of a fast tectonic-plate collision.
  • Question 13
    1 / -0
    Which among the following is the most common disaster that occurs in India?
    Solution
    Floods are the most common natural disaster in India. The heavy southwest monsoon rains cause the Brahmaputra and other rivers to distend their banks, often flooding surrounding areas. Almost all of India is flood-prone, and extreme precipitation events, such as flash floods and torrential rains, have become increasingly common in central India over the past several decades, coinciding with rising temperatures.
  • Question 14
    1 / -0
    The material that comes out of a volcano at the time of eruption is in ___________ forms.
    Solution
    When there is enough pressure, the volcano erupts. The materials include lava, steam, gaseous sulphur compounds, ash and broken rock pieces.
  • Question 15
    1 / -0
    Hurricanes are cyclonic storms that occur in the
    Solution
    Proxy records based on paleotempestological research have revealed that major hurricane activity along the Gulf of Mexico coast varies on timescales of centuries to millennia. Few major hurricanes struck the Gulf coast during 3000–1400 BC and again during the most recent millennium. These quiescent intervals were separated by a hyperactive period during 1400 BC and 1000 AD, when the Gulf coast was struck frequently by catastrophic hurricanes and their landfall probabilities increased by 3–5 times. This millennial-scale variability has been attributed to long-term shifts in the position of the Azores High, which may also be linked to changes in the strength of the North Atlantic oscillation.
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