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WorksheetsAtmosphere and Environment
Total questions: 40
Worksheet time: 22mins
What are the main constituents of air?
Nitrogen and argon
Oxygen and carbon dioxide
Nitrogen and carbon dioxide
Nitrogen and oxygen
What percentage of nitrogen is present in the air?
78%
21%
1%
0.03%
What percentage of oxygen is present in the air?
78%
21%
1%
0.03%
What is the main gas responsible for air pollution?
Carbon monoxide
Nitrogen
Carbon dioxide
Calcium carbonate
Which of these are natural causes of air pollution?
Volcanic eruptions
Deforestation
Human activities
Burning of fossil fuels
What are the effects of air pollution?
Health problems and acid rain
Ozone layer depletion
Global warming and thinning of the ozone layer
All of the above
What is potable water?
Water suitable for industrial use
Water contaminated by pollutants
Water that has been treated for drinking and cooking
Saline water suitable for desalination
What is the main cause of air pollution due to urbanization?
Burning of fossil fuels
Disposal of domestic waste
Emissions from industries
Use of chemicals
What is the purpose of rainwater harvesting?
To prevent flood in low-lying areas
To treat wastewater from sewage and industries
To reduce the effects of global warming
To collect and store rainwater for future use
Which noble gas is present in the largest percentage by volume in air?
argon
helium
krypton
neon
Which list contains only gases that are always present in unpolluted air?
oxygen, nitrogen, carbon dioxide, argon, carbon monoxide, nitrogen dioxide
oxygen, nitrogen, carbon dioxide, argon, neon
oxygen, nitrogen, carbon dioxide, nitrogen dioxide, ozone
oxygen, nitrogen, carbon monoxide, methane, sulfur dioxide
Dry air is a mixture of gases of which 99% is nitrogen and oxygen.
What is the main constituent of the remaining 1%?
argon
helium
hydrogen
water vapour
When volcano erupts, which gas is produced in significant amounts?
carbon monoxide
methane
ozone
sulfur dioxide
What is not essential for photosynthesis?
carbon dioxide
sugar
light
water
The noble gases, argon, helium, krypton and xenon, are present in air.
Which noble gas is present in the largest proportion?
argon
helium
krypton
xenon
Which gas is most likely to react with limestone?
ammonia
carbon monoxide
methane
sulfur dioxide
Which row shows both the correct source and the correct effect of the named pollutant?
A
B
C
D
Which gas can be removed from the exhaust gases of a petrol-powered car by its catalytic converter?
carbon monoxide
carbon dioxide
nitrogen
steam
Which process would destroy the bacteria in water?
chlorination
desalination
filtration
treatment with carbon
The processes photosynthesis, respiration and fermentation all change the amount of carbon dioxide in the atmosphere.
Which processes increase the amount of carbon dioxide in the atmosphere?
photosynthesis and fermentation
photosynthesis only
respiration and fermentation
respiration and decaying
Which gas cannot be removed from the exhaust gases of a petrol-powered car by its catalytic converter?
carbon dioxide
carbon monoxide
hydrocarbons
nitrogen dioxide
The gases coming from a car’s exhaust contain oxides of nitrogen.
How are these oxides formed?
Nitrogen reacts with carbon dioxide
Nitrogen reacts with carbon monoxide
Nitrogen reacts with oxygen
Nitrogen reacts with petrol
A catalytic converter in a car exhaust system speeds up the change of pollutants into less harmful products.
Which change does not occur in a catalytic converter?
carbon dioxide → carbon
carbon monoxide → carbon dioxide
nitrogen oxides → nitrogen
unburnt hydrocarbons → carbon dioxide and water
Natural gas, petroleum and diesel are all used as energy sources.
Which gas is not produced when these sources are burned?
carbon dioxide
carbon monoxide
hydrogen
water vapour
Four current problems in our atmosphere are listed.
1 acid rain
2 depletion of ozone layer
3 presence of greenhouse gases
4 incomplete combustion of carbon compounds
Which atmospheric pollutant is responsible for each problem?
W chlorofluorocarbons
X sulfur dioxide
Y carbon monoxide
Z carbon dioxide
A
B
C
D
Methane is a greenhouse gas.
Which process releases methane into the air?
combustion of petrol
decay of vegetable matter
photosynthesis
volcanic activity
Why are catalytic converters fitted to car exhausts?
to decrease the amount of carbon dioxide emitted
to decrease the amount of nitrogen oxides emitted
to improve energy conservation
to reduce global warming
Which gas is mainly responsible for the green house effect?
H2
O2
CO2
Water vapours
Where you will find the ozone layer?
stratosphere
thermosphere
exosphere
mesosphere
Which human activity involves the cutting down and removal of a forest?
Deforestation
Urbanization
Afforestation
Reforestation
What is the phenomenon in which the Earth's atmosphere traps heat from the sun and warms the planet's surface?
Ozone effect
Global warming effect
Weather
Greenhouse effect
What is the long-term increase in Earth's average surface temperature due to human activities such as burning fossil fuels and deforestation?
Planetary movement
Local warming
Atmospheric freezing
Global warming
What is the term for the process of converting carbon dioxide and water into glucose and oxygen using sunlight?
Photosynthesis
Combustion
Respiration
Evaporation
Which human activity is a major contributor to the increase in greenhouse gases in the atmosphere?
Planting more trees
Burning of fossil fuels, such as coal, oil, and natural gas, is a major contributor to the increase in greenhouse gases in the atmosphere.
Reducing industrial emissions
Burning of plastic waste
Which process is responsible for the breakdown of organic matter and release of nutrients back into the environment?
Photosynthesis
Decomposition
Erosion
Evaporation
The trapping of the Sun’s heat energy in a planet’s atmosphere is called
greenhouse effect
deforestation
global warning
respiration
It refers to the production and release of a gas.
Global warming
Emission
Photosynthesis
Deforestation
The Earth's atmosphere today contains ______oxygen and _____ nitrogen.
21%; 78%
12%; 87%
2%; 8%
4%; 95%
Which component of the blood is affected by carbon monoxide?
plasma
red blood cells
white blood cells
platelets
Sulfur dioxide is harmful to both living and non-living things.
True
False
