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Some Natural Phenomena Test - 18

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Some Natural Phenomena Test - 18
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Fill in the blank:

    Most destructive earthquakes have magnitudes _______ on the Richter scale.
    Solution
    An earthquake of magnitude 7 is found to be destructive. And, obviously, most destructive earthquakes are of magnitude higher than 7 on the Richter scale.
  • Question 2
    1 / -0
    The Earth's crust plates moves brushing past each other or collide. It causes:
    Solution
    Any disturbance deep inside the Earth's crust leads to earthquake.
  • Question 3
    1 / -0
    The plates or the fragments of the Earth's crust are also known as:
    Solution
    Earth's crust is fragmented into pieces which are called plates. These plates are also known as tectonic plates.
  • Question 4
    1 / -0
    Fill in the blank:

    Earth's plates are in _______ motion.
    Solution
    Earth's plates or tectonic plates are always in motion. These plates are floating above magma and are continuously moving and sometimes they collide with each other which cause earthquakes.
  • Question 5
    1 / -0
    The boundaries of the plates, called weak zones, are also known as:
    Solution
    The weak zones are also known as seismic zones. These are zones where earthquake are most likely to occur.
  • Question 6
    1 / -0
    The inner most part or the centre of the Earth is known as ________.
    Solution
    Earth consist of core, mantle and crust. Core is the centre of the Earth. Core, again, consists of inner core and outer core. Inner core is inner most part, or, the centre of the Earth.
  • Question 7
    1 / -0
    Weak zones of plates are also known as:
    Solution
    The boundaries of the plates are the weak zones where earthquakes are more likely to occur. These are also known as seismic zones and fault zones.
  • Question 8
    1 / -0
    The layer below the crust is called _______.
    Solution
    A mantle is a layer inside a planetary body bounded below by a core and above by a crust. Mantles are made of rock or ices, and are generally the largest and most massive layer of the planetary body. Mantles are characteristic of planetary bodies that have undergone differentiation by density.
  • Question 9
    1 / -0
    The most tremor-threatened areas in India are Kashmir, _______ and ________.
    Solution
    In India, Kashmir, Western and Central Himalayas are some places that fall along or near the fault zone. So, earthquakes are most likely to occur in those places.
  • Question 10
    1 / -0
    Earthquakes are caused mostly due to:
    Solution
    Most earthquakes are caused by the movement of the earth’s plates. When plates brush past or collide at the edges, an earthquake occurs.
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