Air and Atmosphere
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Composition of Air
SubtopicComposition of Air under Air and Atmosphere for Grade 7 ICSE.
Preview questions (no answers)
- 1.
Which gas acts as a diluent and prevents rapid burning in our atmosphere?
A.Oxygen
B.Carbon dioxide
C.Nitrogen
D.Hydrogen
- 2.
What provides the energy for the movement of air (wind) in the atmosphere?
A.The Moon
B.The Sun
C.Ocean waves
D.Volcanoes
- 3.
Which of the following gases is NOT used for breathing by humans?
A.Oxygen
B.Nitrogen
C.Carbon dioxide
D.Argon
Download the worksheet for Air and Atmosphere - Composition of Air to practice offline. It includes additional chapter-level practice questions.
Properties and Uses of Oxygen and Nitrogen
SubtopicProperties and Uses of Oxygen and Nitrogen under Air and Atmosphere for Grade 7 ICSE.
Preview questions (no answers)
- 1.
Which gas remains in a test tube after all the oxygen has been removed from a sample of air?
A.Pure Oxygen
B.Mainly Nitrogen
C.Pure Hydrogen
D.Pure Carbon dioxide
- 2.
Which gas is crucial for the process of 'slow oxidation' occurring in our body cells to produce energy?
A.Nitrogen
B.Hydrogen
C.Oxygen
D.Argon
- 3.
The term 'Azote', meaning 'no life', was once used for which gas because it does not support respiration?
A.Oxygen
B.Nitrogen
C.Carbon dioxide
D.Hydrogen
Download the worksheet for Air and Atmosphere - Properties and Uses of Oxygen and Nitrogen to practice offline. It includes additional chapter-level practice questions.
Atmospheric Pollution
SubtopicAtmospheric Pollution under Air and Atmosphere for Grade 7 ICSE.
Preview questions (no answers)
- 1.
Which of the following gases is present in a very small amount () but plays a huge role in the Earth's temperature regulation?
A.Oxygen
B.Carbon dioxide
C.Nitrogen
D.Argon
- 2.
What is the result of excessive smoke and dust particles blocking sunlight in big cities?
A.Increased visibility
B.Haze and reduced visibility
C.Clear blue skies
D.More plant growth
- 3.
Which of these is a non-polluting way to travel short distances?
A.Motorcycle
B.Walking or cycling
C.Diesel bus
D.Petrol car
Download the worksheet for Air and Atmosphere - Atmospheric Pollution to practice offline. It includes additional chapter-level practice questions.
Greenhouse Effect and Global Warming
SubtopicGreenhouse Effect and Global Warming under Air and Atmosphere for Grade 7 ICSE.
Preview questions (no answers)
- 1.
To help prevent global warming, we should promote the use of:
A.Petrol vehicles
B.Renewable energy sources
C.Coal stoves
D.Firewood
- 2.
What is the effect of global warming on mountain glaciers?
A.They grow in size
B.They remain unchanged
C.They melt and retreat
D.They turn into volcanic rock
- 3.
The increase in concentration since the Industrial Revolution is mainly due to:
A.Planting more forests
B.Increase in solar radiation
C.Burning of fossil fuels
D.Decrease in human population
Download the worksheet for Air and Atmosphere - Greenhouse Effect and Global Warming to practice offline. It includes additional chapter-level practice questions.