NCERT Solutions Class 7 Social Science (Geography-Our Environment) Chapter 4 Air– Here are all the NCERT solutions for Class 7 Social Science Chapter 4. This solution contains questions, answers, images, explanations of the complete chapter 4 titled Air of Social Science taught in class 7. If you are a student of class 7 who is using NCERT Textbook to study Social Science, then you must come across chapter 4 Air. After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 7 Social Science Chapter 4 Air in one place.
NCERT Solutions Class 7 Social Science Geography Chapter 4 Air
Here on AglaSem Schools, you can access to NCERT Book Solutions in free pdf for Social Science Geography for Class 7 so that you can refer them as and when required. The NCERT Solutions to the questions after every unit of NCERT textbooks aimed at helping students solving difficult questions.
For a better understanding of this chapter, you should also see summary of Chapter 4 Air , Social Science Geography, Class 7.
| Class | 7 |
| Subject | Social Science Geography |
| Book | Our Environment |
| Chapter Number | 4 |
| Chapter Name |
Air |
NCERT Solutions Class 7 Social Science Geography chapter 4 Air
Class 7, Social Science Geography chapter 4, Air solutions are given below in PDF format. You can view them online or download PDF file for future use.
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Question & Answer
Q.1: For ten days note down weather report from a local newspaper and observe the changes occurring in the weather.
Ans : DIY
Q.2: Answer the following questions.
(i) What is atmosphere?
(ii) Which two gases make the bulk of the atmosphere?
(iii) Which gas creates green house effect in the atmosphere?
(iv) What is weather?
(v) Name three types of rainfall?
(vi) What is air pressure?
Ans : (i) The huge blanket of air surrounding the Earth is called atmosphere. (ii) Nitrogen and oxygen make the bulk of the atmosphere. (iii) Carbon dioxide creates greenhouse effect in the atmosphere. (iv) Weather refers to the short-term changes in the atmosphere. It is the hour-to-hour, day-to-day condition of the atmosphere. (v) Convectional rainfall, orographic rainfall and cyclonic rainfall are the three types of rainfall. (vi) Air pressure is defined as the pressure exerted by the weight of air on the Earth’s surface.
Q.3: Give reasons.
(i) Wet clothes take longer time to dry on a humid day?
(ii) Amount of insolation decreases from equator towards poles?
Ans : (i) Things remain damp and wet, and take longer time to dry when the atmosphere around them is damp and wet. Humidity is the amount of moisture or water vapour present in air at any moment in time. On a humid day, the air is full of water vapour. As the air gets warmer, its capacity to hold the water vapour increases. As a result, conditions become more and more humid. Hence, wet clothes take longer time to dry on a humid day. (ii) Insolation refers to the incoming solar radiations intercepted by the Earth. The amount of sunlight received by the regions close to the Equator is greater than the amount of sunlight received by the regions close to the Poles. This is because of the tilt of the Earth’s axis. As a result of this tilt, the incoming solar radiations cover a greater area at the Equator than at the Poles.
Q.4: For fun.
(i) Solve this Crossword puzzle with the help of given clues:
(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:
Ans : (i)
(ii) Your weather calendar could look like this.
NCERT / CBSE Book for Class 7 Social Science Geography
You can download the NCERT Book for Class 7 Social Science Geography in PDF format for free. Otherwise you can also buy it easily online.
- Click here for NCERT Book for Class 7 Social Science Geography
- Click here to buy NCERT Book for Class 7 Social Science Geography
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