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Class 7 Geography Chapter 4 Question Answers - Air

Very Short Q & A :

Q1: All the living being on the earth depends on the atmosphere for the survival.( T/F)

Ans : True

Q2: Oxygen is the most plentiful gas in the air. (T/F)

Ans : False

Q3: Green plants use ………… to make their food.

Ans : Carbon dioxide

Q4: Which among the following sphere suitable for flying aeroplanes.

Ans : Stratosphere

Q5: In……………meteorites burn up in this layer on entering from the space.

Ans : Mesosphere

Q6: In thermosphere temperature rises very rapidly with increasing height. (T/F)

Ans : True

Q7: Which among the following is not a part of atmosphere?

a. Troposphere

b. Stratosphere

c. Mesosphere

d. Hydrosphere

Ans : Hydrosphere

Q8: The amount of ……………… decreases from the equator towards the pole.

Ans : Temperature

Q9: The air pressure is highest at sea level and decreased with height. (T/F)

Ans : True

Q10: Those wind which blow only during a particular period of the day or year in a small area is called…………….

Ans : Seasonal winds

Q11: Exosphere is the uppermost layer of the earth.(T/F)

Ans : True

Q12: In which of the following layer of atmosphere almost all the weather phenomena occurs.

a. Troposphere

b. Stratosphere

c. Mesosphere

d. Exosphere

Ans : Troposphere

Q13: The degree of hotness and coldness of of the air is known as……………….

Ans : Temperature

Q14: ………………………released in the atmosphere creates a green house effects.

Ans : Carbon dioxide

Q15: When air is heated it expands, become lighter and goes up. (T/F)

Ans : True

Q16: Climate is hour to hour ,day to day condition of atmosphere .(T/F)

Ans : False

The document Class 7 Geography Chapter 4 Question Answers - Air is a part of the Class 7 Course Social Studies (SST) Class 7.
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FAQs on Class 7 Geography Chapter 4 Question Answers - Air

1. What is air pollution?
Ans. Air pollution refers to the presence of harmful substances in the air that can have negative effects on human health, the environment, and ecosystems. These substances can be in the form of gases, particles, or biological materials.
2. What are the main sources of air pollution?
Ans. The main sources of air pollution include industrial emissions, vehicle exhaust, burning of fossil fuels, agricultural activities, and natural sources such as dust and wildfires.
3. How does air pollution affect human health?
Ans. Air pollution can have various health effects, including respiratory problems, such as asthma and bronchitis, cardiovascular diseases, lung cancer, and even premature death. It can also worsen existing conditions and reduce lung function.
4. What are the environmental impacts of air pollution?
Ans. Air pollution can harm the environment in several ways. It can contribute to the formation of acid rain, which damages forests, soils, and bodies of water. It can also lead to the depletion of the ozone layer, causing harmful ultraviolet radiation to reach the Earth's surface. Additionally, air pollution can disrupt ecosystems and harm wildlife.
5. How can we reduce air pollution?
Ans. There are several ways to reduce air pollution. These include using cleaner energy sources, such as renewable energy, reducing emissions from vehicles through better fuel efficiency and electric vehicles, implementing stricter regulations on industrial emissions, promoting sustainable agriculture practices, and raising awareness about the importance of air quality and individual actions.
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