7 Human Environment

 7 Class 

Ch. 7 Human Environment

 A. Tick the correct option . 

1. Which one of the following represents human environment ?

 (a) forest ( b ) desert  (c) city ( d ) ocean

 2. The uneven terrain of highland areas results in --

(a) dispersed settlement ( b ) compact settlement ( c ) urban settlement ( d ) small town ship 

3. Transportation is helpful for the --

 (a) industrialisation of a place . ( b ) cleanliness of a place . ( c ) slow and steady development of a place . ( d ) population of a place . 

4. The floating towns are --

(a) mechanised ships . ( b ) those where large scale migration takes place . ( c ) floating gardens in a river . ( d ) shikara ( house boats ) of Kashmir . 

5. HBJ pipelines is used for the transportation of --

( a ) petroleum ( b ) water (c) slurry iron ore ( d ) natural gas 

B. Fill in the blanks . 

1. Road transport is used for shorter  distances .

2. Pipelines are commonly used for transportation of liquid materials . 

3. Metro is available in large cities like Kolkata_and_Delhi

 4. Nomads are completely dependent on the environment to satisfy their basic needs . 

5. Satellite provide communication services even to the remote areas of the country .

C. Write True or False for the following statements .

 1. Pipelines are the most important means for transporting solid goods . False

2. Metro rails are the fastest and the most comfortable means of transport in metropolitan cities .True

 3. Waterways are the cheapest mode of transport . True

4. In ancient times , cultivation was common in the hilly areas only . False

5. Plains are the least favourable location for the establishment of compact settlements . False

D. Answer the following questions in brief . 

 1. What are wet point settlements ? 

Ans. The settlements that grow around the source of water are known as wet point settlements.

2. Explain the term ' transportation . Name the various means of transportation .

Ans. Transportation is act of moving people or goods from one place to another.

There are five main means of transport Roadways,Railways, waterways, Airways and Pipelines.

3. What is the importance of means of communication ? 

Ans. Communication networks have become very important for exchanging knowledge and ideas which is turn ,contribute to the economic development.

4. Give two advantages of electrification of railways . 

Ans. Two advantages of electrification of Railways are--

1. The electrification of Railway has resulted in reduced pollution .

2. It has also resulted in caring of more number of passengers from one place to another.

5. Mention two advantages of waterways over airways . 

Ans. Waterways are the cheapest mode of transportation for heavy and bulky goods.

They can transport hundreds of passengers and vast amount of goods from one country to another.

            But Airways are  very expensive relatively other means of transport.

It has reduced distances and cover the world into one unit.

E. Answer the following questions . 

1. What are the various factors responsible for permanent settlements ? 

Ans.  The various factors responsible for permanent settlement are availability of water, relief features and special sites.  

Availability of water - most of the civilizations develop near river valleys for example the Indus valley civilization even today water is an important sources of to growth of villages and towns.

Relief features -  relief features and important role in the development of the settlements it is easy to have a good transport network layer which makes it possible for the people to make easily from one place to another.

Special sites - Some sites are chosen for the settlements because of their natural beauty. These are called tourism based  town .They provide employment of many people.  Srinagar Goa ,Simla, Nanital ,Ooty etc. are some of the sites.

2. What are the various advantages of roadways over other means of transport ? 

Ans.  Roadways is the swift and efficient means of transportation  which provides door to door services.  Roads help in the transportation and of perishable items like fruits and vegetables to distant markets with a speedy movement.  Construction and maintenance of roads is cheaper as compared to other means of transport.  In hilly areas, road transport plays a very important role as other means of transport are either not possible or are very expensive

3. Explain how transportation and communication help in the economic development of a country. 

Ans.  There is a great impact of transport and communication on the economic development of a place.  Since the transport system connects cities and towns with one another it can help the places to send the surplus production to different markets and in return help the country in its economic growth.  

Some regions like Indo Gangetic plains of India and industrial region of Europe are very well - developed due to proper transport facilities.

4. What was the impact of the discovery of fire , wheel and iron on human civilisations ?

 Ans.  The discoveries of fire , iron and wheel were big steps towards civilisation . The tools became more sophisticated and farmers started cultivating crops near the river banks like Nile or Indus Valley . 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 were not required to wander in search of food and could afford to settle down at one place.

5. How has the computer technology revolutionised the process of communication ?

Ans. The Computer technology has revolutionized the process of communication through e - mail, internet, CDs, pen drive, laptop, palmtop, etc.  We can get any information about the entire world while sitting at home and using computers.