WorksheetsAir
Total questions: 21
Worksheet time: 10mins
What is the approximate volume of composition of gases present in dry air?
78% nitrogen,
1% oxygen,
21% other gases (largely argon and 0.04% carbon dioxide)
78% nitrogen,
21% oxygen,
1% other gases (largely argon and 0.04% carbon dioxide)
78% oxygen,
21% nitrogen,
1% other gases (largely argon and 0.04% carbon dioxide)
What are the gases in parts 1, 2 and 3?
1 - oxygen
2 - nitrogen
3 - carbon dioxide and noble gases
1 - nitrogen
2 - oxygen
3 - carbon dioxide and noble gases
1 - carbon dioxide and noble gases
2 - nitrogen
3 - oxygen
1 - carbon dioxide and noble gases
2 - oxygen
3 - nitogen
What is the approximate volume of oxygen in 50 cm3 of air?
5 cm3
10 cm3
20 cm3
40 cm3
An 80 cm3 sample of air is trapped in a syringe. The air is slowly passed over heated iron in a tube until there is no further decrease in volume.
What is the volume of gas remaining?
16 cm3
20 cm3
64 cm3
80 cm3
Which diagram best represents a mixture of nitrogen and oxygen?
Select the uses of oxygen.
Making of steel
In oxygen tanks
Photosynthesis
In light bulbs
What are the sources of carbon monoxide?
Incomplete combustion of carbon-based fuels
Complete combustion of carbon-based fuels
Forest fires
Lightning activity
Which of the following air pollutants result in acid rain?
carbon monoxide
carbon dioxide
nitrogen monoxide
nitrogen dioxide
sulfur dioxide
Select the pollutants that cause corrosion of limestone buildings and metallic structures.
carbon monoxide
sulfur dioxide
nitrogen dioxide
methane
Which of the following explains how acid rain is formed?
Carbon monoxide (CO) reacts with oxygen and water vapour and dissolve in rainwater.
NO and NO2 react with unburnt hydrocarbons.
SO2 and oxides of nitrogen react with oxygen and water vapour and dissolve in rainwater.
Select three other air pollutants.
methane
ozone
nitrogen
unburnt hydrocarbons
hydrogen
What are the harmful effects of carbon monoxide?
Causes global warming
Causes acid rain
Binds irreversibly with haemoglobin in blood and lowers ability of blood to transport oxygen
Causes headaches, breathing difficulties and heart damage
What are the sources of sulfur dioxide?
volcanic activity
lightning activity
combustion of fossil fuels
forest fires
What are the harmful effects of sulfur dioxide?
It causes breathing difficulties in humans and animals.
It causes acid rain which can corrode metallic and limestone structures.
It causes global warming.
It causes humans to die due to inability of red blood cells to transport oxygen.
What are the sources of oxides of nitrogen?
lightning activity
combining oxygen and nitrogen at high temperatures in vehicle combustion engines
volcanic activity
forest fires
The carbon cycle is a set of processes that regulates the amount of ________ in the atmosphere.
CO
CO2
CH4
C
Which processes release carbon dioxide in the atmosphere?
Photosynthesis
Respiration
Combustion
Select the common greenhouse gases.
Carbon dioxide
Carbon monoxide
Methane
Sulfur dioxide
Which is essential for life on Earth?
Greenhouse effect
Global warming
Global warming is the (a) in the overall/average temperature of the Earth's atmosphere, which is caused by (b) amounts of greenhouse gases trapping excess heat in the atmosphere.
What are the consequences of global warming and climate change?
More extreme weather events
Desertification of fertile land which results in amount of food produced to decrease
Expansion of polar ice caps
More frequent and severe heat waves
Melting of polar ices resulting in rising sea levels that flood coastal areas
