NCERT Solutions | Class 7 Social Science Geography Chapter 4

NCERT Solutions | Class 7 Social Science Geography Chapter 4 | Air 

NCERT Solutions for Class 7 Social Science Geography Chapter 4 Air

CBSE Solutions | Social Science Class 7

Check the below NCERT Solutions for Class 7 Social Science Geography Chapter 4 Air Pdf free download. NCERT Solutions Class 7 Social Science  were prepared based on the latest exam pattern. We have Provided Air Class 7 Social Science NCERT Solutions to help students understand the concept very well.

NCERT | Class 7 Social Science Geography

NCERT Solutions Class 7 Social Science
Book: National Council of Educational Research and Training (NCERT)
Board: Central Board of Secondary Education (CBSE)
Class: 7th
Subject: Social Science Geography
Chapter: 4
Chapters Name: Air
Medium: English

Air | Class 7 Social Science | NCERT Books Solutions

You can refer to MCQ Questions for Class 7 Social Science Geography Chapter 4 Air to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Class 7 Geography Chapter 4 NCERT Textbook Questions and Answers

CBSE Solutions for Class 7 SST Geography Chapter 4,  Question 1.

Answer the following questions.


(i) What is atmosphere?
(ii) Which two gases make the bulk of the atmosphere?
(iii) Which gas creates greenhouse effect in the atmosphere?
(iv) What is weather?
(v) Name three types of rainfall.
(vi) What is air pressure?

CBSE Solutions for Class 7 Social Science Geography Chapter 4,  Answer:

(i) Our earth is surrounded by a huge blanket of air called atmosphere. All living beings on this earth depend on the atmosphere for their survival.
(ii) Nitrogen and Oxygen make the bulk of the atmosphere. The amount of both gases together is 99% in the atmosphere.
(iii) Carbon dioxide gas creates greenhouse effect in the atmosphere.
(iv) Hour-to-hour, day-to-day condition of the atmosphere is called weather.
(v) Three types of rainfall are:

  • Convectional rainfall
  • Orographic rainfall
  • Cyclonic rainfall

(vi) The pressure exerted by the weight of air on the earth’s surface is known as air pressure.

CBSE Social Science Class 7 syllabus Question 2.

Tick the correct answer.


(i) Which of the following gases protects us from harmful sun rays?
(a) Carbon dioxide
(b) Nitrogen
(c) Ozone

CBSE Solutions Class 7 SST Geography Chapter 4,  Answer:

(c) Ozone

(ii) The most important layer of the atmosphere is:
(a) Troposphere
(b) Thermosphere
(c) Mesosphere

NCERT Solutions for Class 7 Geography Chapter 4,  Answer:

(a) Troposphere

(iii) Which of the following layers of the atmosphere is free from clouds?
(a) Troposphere
(b) Stratosphere
(c) Mesosphere

NCERT Solutions Class 7 Geography Chapter 4,  Answer:

(b) Stratosphere

(iv) As we go up the layers of the atmosphere, the pressure:
(a) Increases
(b) Decreases
(c) Remains the same

CBSE Solutions for Class 7 Geography Chapter 4,  Answer:

(b) Decreases

(v) When precipitation comes down to the earth in the liquid form:
(a) Cloud
(b) Rain
(c) Snow

CBSE Solutions Class 7 Geography Chapter 4,  Answer:

(b) Rain

NCERT Solutions for Class 7 Social Science Geography Chapter 4,  Question 3.

Match the following.


Column I Column II
1. Trade Winds (a) Permanent wind
2. Loo (b) Local wind
3. Monsoon (c) Seasonal wind
4. Wind (d) Horizontal movement of air

CBSE Solutions Class 7 Social Science Geography Chapter 4,  Answer:

1. (c)
2. (d)
3. (a)
4. (b)

CBSE SST Class 7 notes Question 4.

Give reasons.


NCERT Class 7 Social Science Geography Chapter 4,  Answer:

(i) Wet clothes take longer time to dry on a humid day.
(ii) Amount of insolation decreases from equator towards poles.

NCERT Solutions for Class 7 SST Geography Chapter 4,  Answer:

(i) On a humid day, evaporation from wet clothes takes place slowly due to low temperature. Hence, wet clothes take longer time to dry on a humid day.
(ii) Insolation comes through vertical rays on equator. As we go up from equator towards poles, the sun rays become slanting. The slanting rays take up more space; the degree of hotness is felt less. Hence the amount of insolation decreases from equator towards poles.

CBSE Class 7 SST Geography Chapter 4,  Question 5.

For fun.


(i) Solve this Crossword puzzle with the help of given clues:
NCERT Solutions for Class 7 Social Science Geography Chapter 4 Air 1

Across Down
6. An Indian tree having extraordinary quality of providing oxygen round the clock 1. Amount of water vapour in air
8. Gas present in atmosphere occupying only 0.03% by volume 2. Condensation of water vapours around dust particles in atmosphere
11. Outermost layer of atmosphere 3. Example of local wind blowing in summer in northern India
12. Mixture of many gases 4. Short term changes in atmosphere
14. Life giving gas 5. Precipitation in liquid form
15. Air in motion 7. Blanket of air around the earth
16. An indian tree valued highly for medicinal properties 9. Instrument to measure pressure
18. Gas protecting us from harmful sunrays 10. Incoming solar radiation
19. Low pressure area 13. Reduces visibility in winters
17. It is time when sun is overhead

Hints

  1. Humidity
  2. Cloud
  3. Loo
  4. Weather
  5. Rain
  6. Peepal
  7. Atmosphere
  8. Carbon Dioxide
  9. Barometer
  10. Insolation
  11. Exosphere
  12. Air
  13. Fog
  14. Oxygen
  15. Wind
  16. Neem
  17. Noon
  18. Ozone
  19. Cyclone

(ii) Make a weather calendar for one week. Use pictures or symbols to show different types of weather. You can use more than one symbol in a day, if the weather changes. For example, the sun comes out when rain stops. An example is given below:
NCERT Solutions for Class 7 Social Science Geography Chapter 4 Air 2NCERT Solutions for Class 7 Social Science Geography Chapter 4 Air 3

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