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Earth’s crust have the abundant reserves of______: Iron, silicon and oxygen
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Atmospheric pressure exerted on earth is due to______: Gravitational pull
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Basalt rock is an example of______: Volcanic
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Which of the following layers makes radio transmission possible? Ionosphere
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The shape of the Earth is______: Oblate spheroid
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The equatorial radius of the Earth is approximately______: 6371 Km
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What is the approximate circumference of the Earth? 40000 Km
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The Earth completes one rotation on its axis in______: 23 hours, 56 minutes and 4.9 seconds
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What is the shape of the Earth’s orbit around the sun? Ellipse
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The polar diameter of the Earth is shorter than its equatorial diameter by______: 43 Km
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In which part of the atmosphere commercial aircrafts usually fly? Troposphere
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The layer of atmosphere close to the Earth’s surface is called_____: Troposphere
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The Earth is spheroid because of its______: Centrifugal force of rotation
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Earthquakes are caused by______: Tectonism
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Which of the following is/are main agent of soil erosion? Wind and water
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The most abundant element in the Earth’s atmosphere is______: Nitrogen
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The oceans cover approximately _____ of the Earth’s surface: 70%
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The distance between consecutive longitudes at the poles is______: Zero
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Monsoon is caused by______: Seasonal reversal of winds
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Equinox means______: Days and nights are equal
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A day is added when a man crosses the International Date Line from______: East to West
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The line joining the areas having the same rainfall is called______: Isohyet
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Which of the following is a great circle? Equator
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Lines drawn parallel to the equator are called______: Latitudes
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Lines joining places of equal temperature are called______: Isotherms
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Slate, diamond and marble are ______ rocks: Metamorphic
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Wind blowing in a spiral form around a region of low atmospheric pressure is called______: Cyclone
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On 21st June the sun is vertically overhead the______: Tropic of Cancer
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For a time difference of one hour the longitudinal distance is equal to______: 15°
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The International Date Line passes______: Exactly through 180° longitude
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Which of the following is an igneous rock? Granite
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Which of the following is an example of sedimentary rock? Limestone
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Which of the following pairs is correct? Marble: Metamorphic rock
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Savannah Grasslands with tall trees are mainly found in______: Africa
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Pampas are the vast grassy plains of______: South America
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______ is the distance travelled by a pulse of light in one year, which is about 9.46 trillion km (5.88 trillion mi), as calculated on the speed of light: Light year
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The top of the earth, at latitude 90 ͦN; one of the two places (the other being the South Pole), where the planet’s axis intersects the surface is called______: North Pole