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The Air Around You - Part 1

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
What is the atmosphere made up of?   a mixture of atoms and molecules of different kinds  
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What makes up a molecule?   it is made up of 2 or more atoms  
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What is the earth's atmosphere made up of?   nitrogen, oxygen, carbon dioxide, water vapor, and many other gases, as well as particles of liquids and solids  
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What is the most common gas in the atmosphere?   nitrogen  
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Approximately, how much nitrogen is in the air we breathe?   3/4 or 78%  
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What is the movement cycle of nitrogen?   the air to the soil, into living things, and then back into the air  
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What is the second most abundant gas in the atmosphere?   oxygen  
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Approximately, how much oxygen is in the air we breathe?   1/4 or 21%  
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What do plants and other organisms use light for?   to convert water and carbon dioxide into oxygen and to produce food  
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What is an example of a process that uses oxygen quickly?   a fire burning  
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What is an example of a process that uses oxygen slowly?   iron oxide, or rust forming on steel  
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What is in a nitrogen molecule?   2 nitrogen atoms  
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What is in an oxygen molecule?   2 oxygen atoms  
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What is in a carbon dioxide molecule?   1 carbon atom & 2 oxygen atoms  
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What do plants do with the carbon dioxide they get from the air?   they make food  
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When plant and animal cells break down food to produce energy, what waste product do they give off?   carbon dioxide  
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What 2 gases make up 99% of dry air?   nitrogen & oxygen  
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What are the other 2 gases that make up the majority of the 1% of dry air?   argon & carbon dioxide  
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What is a form of oxygen that has three atoms of oxygen, rather than two?   ozone  
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Created by: lprinke
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