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General Geographical Features Test - 12

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General Geographical Features Test - 12
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  • Question 1
    1 / -0
    Fill in the blank: The winds blow from sea towards the coastal areas are called ____________.
    Solution
    In areas close to the shore, in daytime the land is warmer than the sea. Therefore the air pressure of the land is lower than the sea. As a result, wind usually blows from the sea to the land. Such type of wind is called a "sea breeze".
  • Question 2
    1 / -0
    Which of the following occurs more frequently than the other three in the Indian Ocean?
    Solution
    Cyclone is a large scale air mass that rotates around a strong center of low atmospheric pressure. Cyclones are characterized by inward spiraling winds that rotate about a zone of low pressure.
  • Question 3
    1 / -0
    The ozone layer in the upper part of the atmosphere protects us from
    Solution
    The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains high concentration of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.
  • Question 4
    1 / -0
    The instrument used for measuring air pressure is called
    Solution
    A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. A simple barometer consists of a long glass tube (closed at one end, open at the other) filled with mercury and turned upside down into a container of mercury.
  • Question 5
    1 / -0
    A sudden fall in the barometric reading indicates
    Solution
    Meteorologically, a drop in barometric reading means atmospheric pressure is falling.A barometer that is falling indicates that a low pressure system is moving in, and you can expect poorer weather i.e a storm . A storm is any disturbed state of an environment It may be marked by significant disruptions to normal conditions such as strong wind, tornadoes, hail, thunder and lightning , heavy precipitation etc.
  • Question 6
    1 / -0
    When moist air meets cold surface of earth, some of the water vapours condense on the particles of dust in air. It is called
    Solution
    Fog is a visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface. Fog can be considered a type of low-lying cloud, usually resembling stratus, and is heavily influenced by nearby bodies of water, topography, and wind conditions.
  • Question 7
    1 / -0
    The term 'rock' comprises
    Solution
    Rocks are composed of grains of minerals, which are homogeneous solids formed from a chemical compound arranged in an orderly manner.Rocks are formed when magma cools in the Earth's crust, or lava cools on the ground surface or the seabed.
  • Question 8
    1 / -0
    The instrument used for recording earthquake waves is
    Solution
    A seismograph 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.
  • Question 9
    1 / -0
    Volcanic activity leads to the formation of
    Solution
    Crater lakes are formed due to volcanic activities. The volcanic materials accumulate around the opening or hole taking the form of a cone. The top of the cone has a funnel shaped depression which is called its crater
  • Question 10
    1 / -0
    The Himalayas are formed due to
    Solution
    The Himalayan mountain range and Tibetan plateau have formed as a result of the collision between the Indian Plate and Eurasian Plate which began 50 million years ago and continues today. 225 million years ago (Ma) India was a large island situated off the Australian coast and separated from Asia by the Tethys Ocean.
  • Question 11
    1 / -0
    Soil conservation is the process where
    Solution
    Soil conservation is the preventing of soil loss from erosion or reduced fertility caused by over usage, acidification, salinization or other chemical soil contamination. Slash-and-burn and other unsustainable methods of subsistence farming are practiced in some lesser developed areas.
  • Question 12
    1 / -0
    Lagoons are often found
    Solution
    Coastal lagoons are common, occurring along nearly 15 percent of the world's shorelines. In the United States, lagoons are found along more than 75 percent of the Eastern and Gulf coasts. Coastal lagoons are usually connected to the open ocean by inlets between barrier islands.

    Coastal lagoons are created as a shallow basin near the shore gradually erodes, and the ocean seeps in between the sandbars or barrier islands. The size and depth of coastal lagoons often depend on sea level. When the sea level is low, coastal lagoons are swampy wetlands.
  • Question 13
    1 / -0
    Exposure of rock to the changes of temperature is the cause of
    Solution
    Thermal stress weathering, sometimes called insolation weathering, results from the expansion and contraction of rock, caused by temperature changes. For example, heating of rocks by sunlight or fires can cause expansion of their constituent minerals. This is referred to as mechanical weathering.
  • Question 14
    1 / -0
    The deepest trench 'Mariana Trench' is in
    Solution
    The deepest trench 'Mariana Trench' is in Pacific Ocean. The Challenger Deep in the Mariana Trench is the deepest known point in Earth's oceans. In 2010 the United States Center for Coastal & Ocean Mapping measured the depth of the Challenger Deep at 10,994 meters .
  • Question 15
    1 / -0
    The world's largest lake is
    Solution
    The salty Caspian Sea has the greatest surface area of any lake at 143,200 square miles (370,886 square kilometers).
    The Caspian Sea is the world's largest inland body of water, variously classed as the world's largest lake or a full-fledged sea. It is an endorheic basin located between Europe and Asia, to the east of the Caucasus Mountains and to the west of the broad steppe of Central Asia.
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