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WorksheetsThe atmoshphere protect us
Total questions: 10
Worksheet time: 7mins
The layer of gases, known as air that surrounds planet Earth and is retained by gravity is called the (a) . Type your answer.
The atmosphere protects Earth's environment and its inhabitants from the sun because it s (a) it completely.
Clean air is important for a healthy life. What is the most dangerous way in which the atmosphere can become polluted.
burning fuel in factories
cutting down trees
riding a motor bike
lighting a match
What percentage of oxygen is in Earth's atmosphere?
78%
21%
4%
0.037%
The ozone layer is in a part of the atmosphere high above the surface of the Earth that protects us from the sun's radiation. What is the name of the atmosphere?
exosphere
thermosphere
mesosphere
stratosphere
Scientific studies have shown that the ozone is getting thinner in some places. The use of which items help to cause this problem?
aerosol spray cans and refrigerators
air conditioners and aerosol spray cans
polystyrene, refrigerators and air conditioners
refrigerators, aerosol spray cans, polystyrene and air conditioners
The chemical called chloro-fluoro-carbons or CFCs does not contribute to the thinning of the ozone layer.
true
false
Which TWO gases produced from the burning of fossil fuels react with water in the air to produce acid rain.
sulphur
nitrogen
carbon dioxide
helium
Plants use sunlight to make food in a process. It produces the oxygen needed by animals to help them breathe clean air. However, acid rain damages plants and prevents them from going through this important process. What is the name of this process? Type your answer.
(a)
Global warming is produced from gases which are released by the burning of coal, natural gas, oil, and wood that traps heat in the atmosphere.
true
false
