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restless atmosphere

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
the blanket of air that surrounds the planet?   atmosphere  
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The atmosphere is a mixture of which gases?   oxygen, nitrogen, carbon dioxide and ozone  
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What does the ozone layer protect us from ?   harmful UV rays of the sun  
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what is the lower layer of the atmosphere called ?   the troposphere  
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Over 75% of earth's gases are found here?   the troposphere  
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where does weather form?   the troposphere.  
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A huge mass of burning gases?   the sun  
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how much of the solar radiation actually gets through the atmosphere and reaches the surface of the earth?   50 per cent  
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Are places that are near the equator warmer or colder than places that are nearer the poles?   warmer  
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The amount of heat received from the sun at any place on earth depends on what?   the latitude of that place and tilt of the axis.  
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