These DAV Class 7 SST Book Solutions Pdf and DAV Class 7 SST Chapter 7 Question Answer – Human Environment are thoughtfully prepared by experienced teachers.
DAV Class 7 SST Ch 7 Question Answer – Human Environment
DAV Class 7 SST Ch 7 Solutions – Human Environment
Something To Know
A. Tick (✓) the correct option.
Question 1.
Which one of the following represents human environment?
(a) Forest
(b) desert
(c) City
(d) Ocean
Answer:
(c) City
Question 2.
The uneven terrain of highland areas results in
(a) dispersed settlement
(b) compact settlement
(c) urban settlement
(d) small township
Answer:
(a) dispersed settlement
Question 3.
Transportation is helpful for the
(a) industrialisation of a place.
(h) cleanliness of a place.
(c) the slow and steady development of a place.
(d) the population of a place.
Answer:
(a) industrialisation of a place.
Question 4.
The floating towns are
(a) large mechanised ships.
(b) those where large-scale migration takes place.
(c) floating gardens in a river.
(d) Ishikawa (houseboats) of Kashmir.
Answer:
(a) large mechanised ships.
Question 5.
HBJ pipelines is used for the transportation of
(a) petroleum
(b) water
(c) slurry iron ore
(d) natural gas
Answer:
(d) natural gas
B. Fill in the blanks.
Question 1.
Road transport is used for ……………… distances.
2. ……………. are commonly used for transportation of liquid materials.
3. Metro is available in large cities like ………………. and ……………….
4. Nomads are completely dependent on the ………………. to satisfy their basic needs.
5. ………………. Provide communication services even to the remote areas of the country.
Answer:
1. shorter
2. Pipelines
3. Kolkata; Delhi
4. forests
5. Satellites
C. Write True or False for the following statements.
1. Pipelines are the most important means for transporting solid goods.
2. Metro rails are the fastest and the most comfortable means of transport in metropolitan cities.
3. Waterways are the cheapest mode of transport.
4. In ancient times, cultivation was common in the hilly areas only.
5. Plains are the least favourable location for the establishment of compact settlements.
Answer:
1. False
2. True
3. True
4. False
5. False
D. Answer the following questions in brief.
Question 1.
What are wet point settlements?
Answer:
The settlements which grow around a source of water are known as wet point settlements.
Question 2.
Explain the term ‘transportation’. Name the various means of transportation.
Answer:
Transportation is the act of moving people or goods from one place to another. The various means of transportation are Roadways, Railways, Waterways, Airways and Pipelines.
Question 3.
What is the importance of means of communication?
Answer:
‘Communication is very important to exchange knowledge and ideas which, in turn, contribute to the economic development. It also helps in developing social relationships and unity.
Question 4.
Give two advantages of the electrification of railways.
Answer:
1. It has reduced pollution.
2. It has helped in carrying of more passengers from one place to another.
Question 5.
Mention two advantages of waterways over airways.
Answer:
1. Waterways are the cheapest means of transport.
2. They are fuel-efficient and environment-friendly means of transport.
E. Answer the following questions.
Question 1.
What are the various factors responsible for permanent settle¬ments?
Answer:
The various factors responsible for permanent settlement are availability of water, relief features and special sites.
(a) Availability of water. It is the most important factor in the way of development of permanent settlements. Here, it is worth- mentioning that most of the civilisations developed near river valleys, for example, the Indus valley civilisation. In desert areas too, we see clusters of houses around a source of water such as a well, a pond or an oasis.
(b) Relief features. Plains are favourable locations for the establishment of settlements because they have a good transport network which makes it possible for the people to move easily from one place to another. Here, we can cite the example of northern plains of India which are thickly populated regions of the country.
(c) Special Sites. Sites covering natural beauty are also chosen for the settlements. These towns are called tourism-based towns and provide employment to many people. In India, Kashmir, Goa, Shimla, Nainital, Ooty, etc. are some of such sites.
Question 2.
What are the various advantages of roadways over other means of transport?
Answer:
Construction and maintainence of roads is cheaper as compared to railway lines.
- In hilly areas, road transport plays a very important role, as other means of transport such as railways are either not possible or are very expensive.
- Road transport is economical in transportation of few persons and relatively smaller amount of goods over short distances.
- Road transport is economical in transportation of few persons and relatively smaller amount of goods over short distances.
- It provides door to door services. This reduces the cost of loading and unloading of goods.
Question 3.
Explain how transportation and communication help in the economic development of a country.
Answer:
Both of them are equally important for the economic development of a country. A good transport network connects cities and towns with one another. It can help the people to send surplus production to different markets and in return help the country in its economic growth.
Transportation also helps in industrialisation of a place. Raw materials can be transported from mining areas or farms to factories. Communication networks have become very important for exchanging knowledge and ideas which, in turn, contribute to the economic development of the concerned country.
Question 4.
What was the impact of discovery of fire, wheel and iron on the life of human beings?
Answer:
The life of human beings completely changed with the discoveries of fire, wheel and iron. These discoveries proved to a milestone in the development of civilisations. The tools became more sophisticated and farmers started cultivating crops near the river banks.
With the passage of time, human beings learnt new ways of farming. Now, they started living a settled life as crops required constant care throughout the cropping period. They ceased to wander in search of food. Instead, they settled down at one place. They built permanent shelters, domesticated animals and wore clothes made of fibre.
Question 5.
How has the computer technology revolutionised the process of communication?
Answer:
Computerisation is every field is the order of the day. No one had imagined that computers in the forthcoming years would play such decisive role in communication. It has revolutionised the process of communication through e-mail, internet, CDs, pen- drive, laptop, etc. Today people can get any type of information about the entire world while sitting at home and using computers.
Value-Based Question
India signed a Road Connectivity Pact with Bangladesh, Bhutan and Nepal (BBIN) on 15 June 2015 to create way for greater trade and economic co-operation among these countries. This agreement has been designed to facilitate efficient road transport for regional integration. Exports and imports will increase and create new opportunities for trade and business.
- How would the above said Pact reduce regional conflicts among countries and promote co-operation for the welfare of people?
- Why are peaceful relations with neighbours an important part of India’s foreign policy? Support your answer with examples.
Answer:
Do yourself with the help of the Internet and other sources.
Map Skill
On the outline map of the world, locate and label any five –
(a) International seaports of the world
(b) International airports of the world.
Answer:
Something To Do
Question 1.
What would have been the life of human beings without fire, wheel and iron?
Answer:
Life of human beings –
(i) without fire: Humans discovered that fire can be used to cooked food and create tools and weapons. Without fire life would be similar to living on the moon. There would be no electricity, no warmth, and no cooked food. Our shelter, agriculture and technology in general would not be able to progress without fire. Without fire, unemployment rate would go up tremendously, because jobs like chefs, coal miners and fire fighters are directly related to fire.
(ii) without wheel: The invention of wheel is considered to be a landmark in human history. This revolutioned movement of people and goods. Without wheel, we would not have many useful transportation vehicles like cars, buses, trucks, trains or aeroplanes. Also we would not have useful objects that are influenced by the wheel such as a pottery wheel, cranes, gears, steering wheel, etc.
(iii) without iron: Iron is a metallic chemical element that is very common in the earth. A combination of iron and other elements make up important products that are found very useful in many ways, and without iron we would not make machine parts, tools, vehicles, building structure, etc. Also our body needs iron to help oxygen get to our muscles. Hence, iron is so important and without it human life would cease to exist.
Collect information about the following –
(a) The highest road in India.
(b) The longest railway line of the world.
(c) The most navigable river of India.
(d) The places where toy trains are run.
(e) The terminal station of the first railway introduced in India during the British period.
(f) The international airports of Delhi, Mumbai, Chennai, Kolkata.
(g) Five domestic airports in India.
Answer:
(a) Leh-Manali Highway.
(b) Trans-Siberian Railway Line.
(c) Ganga.
(d) Darjeeling Himalayan Railway, Kalka-Shimla Railway, Kangra Valley Railway, Nilgiri Mountain Railway, Matheran Hill Railway, etc.
(e) Royapuram.
(f) 1. Indira Gandhi International Airport, Delhi.
2. Chhatrapati Shivaji International Airport, Mumbai.
3. Meenambakkam International Airport, Chennai.
4. Netaji Subhash Chandra Bose International Airport, Kolkata.
(b) 1. Hyderabad Airport
2. Jabalpur Airport
3. Chandigarh Airport
4. Kochi Airport
5. Bengaluru Airport.
DAV Class 7 Social Science Chapter 7 Question Answer – Human Environment
A. Tick (✓) the correct option.
Question 1.
Which one of the following places is not a tourism based town?
(a) Ooty
(b) Shimla
(c) Ludhiana
(d) Nainital
Answer:
(c) Ludhiana
Question 2.
It is called the lifeline of a country.
(a) Roadways
(b) Railways
(c) Waterways
(d) Airways
Answer:
(b) Railways
Question 3.
Which one of the following statements is not correct about the waterways?
(a) It is the latest means of transport.
(b) It is the cheapest means of transport.
(c) It carries heavy and bulky goods.
(d) It is a fuel-efficient means of transport.
Answer:
(a) It is the latest means of transport.
Question 4.
The most recent mode of transport is
(a) pipelines
(b) roadways
(c) waterways
(d) airways
Answer:
(a) pipelines
Question 5.
The most powerful medium of communication is
(a) radio
(b) telegraph
(c) magazine
(d) satellite
Answer:
(d) satellite
Question 6.
Which one of the following divices is not included in communication?
(a) cell phone
(b) video game
(c) pen drive
(d) internet
Answer:
(b) video game
Question 7.
In pre-historic times, people travelled
(a) by ships
(b) on foot
(c) by bullock cart
(d) by carriage
Answer:
(b) on foot.
B. Very Short Answer Type Questions
Question 1.
What is settlement?
Answer:
Settlement is the primary residence of human society.
Question 2.
What were temporary settlement made with?
Answer:
Temporary settlements were made with the help of branches of trees and leaves.
Question 3.
In which areas were the number of settlements more and clustered?
Answer:
The number of settlements were more and clustered in those areas where climatic conditions were suitable.
Question 4.
Give three points that became parts of human life.
Answer:
- Building of permanent shelters.
- Domestication of animals.
- Use of clothes made of fibre.
Question 5.
Mention some features of the new settlements that came into being with the development of science and technology.
Answer:
The new settlements protect the human beings from harsh temperature, chilly winds, rough terrain and also give them privacy.
Question 6.
Mention three factors that have adversely affected the natural environment.
Answer:
- Expansion of agricultural activities.
- Domestication of animals.
- Mining and industrialisation.
Question 7.
What do you mean by isolated settlements?
Answer:
In highland areas, where the nature of land restricts easy movements, the population is less. Settlements that develop in such areas are called isolated settlements.
Question 8.
Which types of towns are called tourism-based towns? Give a few examples of such towns.
Answer:
The towns where settlements develop because of their natural beauty are called tourism-based towns. Examples—Goa, Shimla, Ooty, Kashmir, etc.
Question 9.
How did people in pre-historic times transport goods?
Answer:
They transported goods by carrying them on their back or head.
Question 10.
What is the main reason for the backwardness of some regions of the world?
Answer:
Some regions of the world are backword because they suffer from the lack of transport facilities.
Question 11.
Mention one advantage of transport network.
Answer:
Transport network helps to open-up remote areas or inaccessible areas to the world.
Question 12.
Which is the largest railway line in the world?
Answer:
The largest railway line in the world is the Trans-Siberian Railways that links St. Petersberg to Vladivostok in Russia.
Question 13.
Name two fast moving trains.
Answer:
Rajdhani and Shatabdi.
Question 14.
What do you mean by floating towns?
Answer:
Nowadays, large and mechanised ships, equipped with all modern facilities, can easily carry a large number of people and goods to distant places. Such ships are known as the floating towns.
Question 15.
Mention one merit of the pipelines. Give one example of pipelines in India.
Answer:
The pipelines are the most suitable means of transport for cariying liquid and gaseous materials from one place to another. Example-From HBJ Kandla to Mathura pipeline.
Question 16.
Mention two means of instant communication.
Answer:
Television and radio are the two means of instant communication.
Question 17.
How do television and radio help people during natural calamities?
Answer:
During natural calamities like floods, droughts, etc. television and radio flash news, so that relief could be rushed to the spot without delay.
Question 18.
Name some communication devices.
Answer:
E-mail, Internet, CD, pen drive, cellphone, laptop, etc.
C. Short Answer Type Questions
Question 1.
Which is the fastest means of transport? Describe in brief about it.
Answer:
Air transport or airways is the fastest means of transport. This mode of transport has reduced distances and converted the world into one unit. It is suitable for those areas where railways and roadways cannot be constructed because of difficult terrain. It is also the most comfortable and prestigeous means of transport.
Question 2.
What is the role of transport in the development of a country?
Answer:
Transport plays an important role in the development of a country. There is no exaggeration if we say that the pace of development depends upon the level of infrastructural and transport facilities. A good network of transport helps the people in moving from one place to another which also influences the social development.
It also affects the country’s economic development. A good transport network connects cities and towns with one another. In its absence, no progress can be imagined. It also helps to open-up remote areas or inaccessible areas to the world. It plays an important role in industrialisation of a place.
Question 3.
How were messages sent in olden times? What developments came to be seen with the passage of time in this field?
Answer:
People in olden times used pigeons to send messages to different places. Then, came the services like posts, newspapers, magazines, radio, television, etc. And today we have satellites to serve this purpose. Satellite is the most powerful medium of communication in the world. It provides television services even in the remote areas of the country.
Computer is yet another great invention by man. It has revolutionised the process of communication through e-mail, internet, CD, pen drive, laptop, etc. with the availability of computers it has become easy to get information about the entire world while sitting at home.
Question 4.
How did human beings start living a settled life?
Answer:
In ancient times, human beings didn’t have a settled life. They were basically food gatherers and moved from one place to another in search of food. Slowly and steadily they improved their ways and learnt the art of agriculture and farming. Once they learnt this art, the concept of settlements came into being. They began to establilsh their shelters near areas where land could be cultivated for temporaiy stay.
They used branches of trees and leaves in building their temporary settlements. The discoveries of fire, iron and wheel proved to be of great advantages. Human beings learnt new ways of farming. Now, they started living a settled life. They ceased to be wanderers. They also domesticated animals and used clothes made of fibre.
Question 5.
What is meant by the term communication? Explain the latest means of communication.
Answer:
By the term communication we mean exchange of ideas and views from one person to another. It can be at personal as well as at mass level. Computer is the latest means of communication. It has revolutionised the process of communication through e-mail, internet, CDs, pen drive, laptop, laptop, etc. We can get any piece of information about the entire world while sitting at home and using computers.
D. Long Answer Type Questions
Question 1.
What are the various means of transport? Describe them.
Answer:
There are five main means of transportation. They are –
(i) Roadways. They are used for covering shorter distances. They provide door to door services. Roads help in the transportation of perishable items to distant markets with a speedy movement. In hilly areas, road transport plays a veiy important role. A well-developed road transport system reduces the social, political and economic distances among the people of different cultural backgrounds.
(ii) Railways. They provide an important means of transport by carrying bulky goods and a large number of passengers to longer distances. They also provide the most comfortable and less expensive means of transport. They bring people closer from the farthest corners of the country. The electrification of railways proved to a great boon as a result of which pollution has been reduced. It has also helped in carrying more number of passengers from one place to another. And now we have fast moving trains like Shatabdi and Rajdhani.
(iii) Waterways. They provide the cheapest mode of transportation for heavy and bulky goods. They are very beneficial to the countries located near the river banks, navigable canals or the sea. Big ships can carry more passengers and goods from one country to another. Nowadays, large and mechanised ships are there with all the modern facilities.
(iv) Airways. The latest and fastest means of transport refers to airways, but relatively expensive. Airways has, in a way, reduced distances and converted the world into one unit. This means of transport is highly suitable for those areas where railways and roadways cannot be constructed because of difficult terrain.
(v) Pipelines. Pipeline network is the most recent arrival. It is used for the transportation of liquid and gaseous materials like mineral oil, water and natural gas. Solids in slurry form are also transported from one place to another.
Question 2.
Describe about the Railway Zones of India.
Answer:
Indian Railways is divided into several zones, which are further sub-divided into divisions. The number of zones in Indian Railways increased from six to eight in 1951, nine in 1952 and sixteen in 2003. Each zonal railway is made up of a certain number of divisions, each having a divisional headquarters. There are a total of sixty-eight divisions. Each of the sixteen zones is headed by a General Manager who reports directly to the Railway Board.
The zones are further divided into divisions under the control of Divisional Railway Managers (DRM). The divisional officers of engineering, mechanical, electrical, signal and telecommunication, accounts, personnel, operating, commercial, security and safety branches report to the respective Divisional Manager and are in charge of operation and maintenance of assets.
Map Skill
On an outline map of India, mark all the major international airports.
Answer:
