1.	The energy derived from the heat of the earth is called ______ ?
	Geothermal Energy
	Solar Energy
	Biogas
	Tidal Energy
	Answer: Geothermal Energy Explanation: Geothermal energy is heat derived within the sub-surface of the earth. Water and/or steam carry the geothermal energy to the Earth's surface.
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2.	Which of the following is the lowermost layer of the Atmosphere ?
	Troposphere
	Thermosphere
	Exosphere
	Mesosphere
	Answer: Troposphere Explanation: The Troposphere is the lowest layer of the Earth's atmosphere. This layer contains most of Earth’s clouds and is the location where weather primarily occurs. The troposphere is heated from the ground, so temperature decreases with altitude. The surface of the Earth absorbs energy and heats up faster than the air does.
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3.	Which is the second most abundant gas in Earth's atmosphere ?
	Oxygen
	Nitrogen
	Hydrogen
	Carbon dioxide
	Answer: Oxygen Explanation: The most abundant naturally occurring gas is Nitrogen which makes up about 78% of air. Oxygen is the second most abundant gas at about 21%.
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4.	A force due to which moving objects (wind and water current) tend to deflect to the right in Northern hemisphere and left in Southern hemisphere is known as ?
	Coriolis force
	Endogenic force
	Magnetic force
	Applied force
	Answer: Coriolis Force Explanation: If the Earth did not rotate on its axis, the atmosphere would only circulate between the poles and the equator in a simple back-and-forth motion. Because the Earth rotates on its axis, circulating air is deflected toward the right in the Northern Hemisphere and toward the left in the Southern Hemisphere. This deflection is called the Coriolis effect.
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5.	Which environmental phenomenon has been linked to synthetic chemicals like chlorofluorocarbons (CFCs) ?
	Electromagnetic interference
	Tidal flow
	Ozone depletion
	Wave propagation
	Answer: Ozone depletion Explanation: Chlorofluorocarbons destroy the earth’s protective ozone layer.
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6.	World _______ day 2019 was observed on 23rd March with the theme, ‘The Sun , The Earth and The Weather’ ?
	Geographical
	Geological
	Astrological
	Meteorological
	Answer: Meteorological Explanation: World Meteorological Day is celebrated every year on 23 March to commemorate the entry into force in 1950 of the convention that created the World Meteorological Organization. Recent theme of World Meteorological day have been : The Sun, the Earth and the Weather, 23 March 2019.
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7.	Which of the following statements about the ionosphere is NOT correct ?
	Radio waves transmitted from the earth are reflected back to the earth by this layer.
	It contains charged particles.
	It is ionised by solar and cosmic radiation.
	It is located immediately above the stratopause.
	Answer: It is located immediately above the stratopause Explanation: The ionosphere is the part of the atmosphere that is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere. The 7 Layers of Earth in Order are: Exosphere; Ionosphere; Thermosphere; Mesosphere; Ozone Layer; Stratosphere;Troposphere; Earth's Surface.
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8.	In the context of the mesosphere, which of the following statements is NOT correct ?
	It is the third layer of the atmosphere.
	In this layer temperature rises very rapidly with increasing height.
	Meteorites burn up in this layer on entering from space.
	It is directly above the stratosphere.
	Answer: In this layer temperature rises very rapidly with increasing height. Explanation: The Mesosphere is the third layer of Earth’s atmosphere which lies directly above the Stratosphere and below the Thermosphere. The boundary between the mesosphere and thermosphere above it is called the mesopause. Most meteors vaporize in the mesosphere. Some material from meteors lingers in the mesosphere, causing this layer to have a relatively high concentration of iron and other metal atoms. In this layer, temperature decreases with increasing height due to decreased absorption of solar radiation by the rarefied atmosphere and increasing cooling by Co2 radiative emission.
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