DAV Class 7 SST – Chapter 7 Solutions
Human Environment
Something to Know
Tick (✓) the Correct Option
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Which one of the following represents human environment?
Answer: (c) City -
The uneven terrain of highland areas results in –
Answer: (a) dispersed settlement -
Transportation is helpful for the –
Answer: (a) industrialisation of a place -
The floating towns are –
Answer: (a) large mechanised ships -
HBJ pipelines is used for the transportation of –
Answer: (d) natural gas
Fill in the Blanks
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Road transport is used for shorter distances.
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Pipelines are commonly used for transportation of liquid materials.
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Metro is available in large cities like Kolkata and Delhi.
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Nomads are completely dependent on the forests to satisfy their basic needs.
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Satellites provide communication services even to the remote areas of the country.
True or False
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Pipelines are the most important means for transporting solid goods. – False
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Metro rails are the fastest and the most comfortable means of transport in metropolitan cities. – True
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Waterways are the cheapest mode of transport. – True
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In ancient times, cultivation was common in the hilly areas only. – False
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Plains are the least favourable location for the establishment of compact settlements. – False
Answer the Following Questions in Brief
Q1. What are wet point settlements?
Answer: Settlements which grow around a source of water are known as wet point settlements.
Q2. 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.
Q3. What is the importance of means of communication?
Answer: Communication is important to exchange knowledge and ideas which contribute to economic development. It also helps in developing social relationships and unity.
Q4. Give two advantages of the electrification of railways.
Answer:
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It has reduced pollution.
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It has helped in carrying more passengers from one place to another.
Q5. Mention two advantages of waterways over airways.
Answer:
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Waterways are the cheapest means of transport.
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They are fuel-efficient and environment-friendly.
Answer the Following Questions
Q1. What are the various factors responsible for permanent settlements?
Answer:
The main factors are availability of water, relief features and special sites.
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Availability of water: Most civilisations developed near river valleys, e.g., Indus Valley Civilisation. In desert areas, clusters of houses develop around water sources such as wells, ponds or oases.
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Relief features: Plains are favourable for settlements because of good transport networks, e.g., Northern Plains of India.
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Special sites: Locations with natural beauty become tourism-based towns providing employment, e.g., Kashmir, Goa, Shimla, Nainital, Ooty.
Q2. What are the various advantages of roadways over other means of transport?
Answer:
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Cheaper to construct and maintain compared to railway lines.
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Useful in hilly areas where other means are difficult or expensive.
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Economical for transporting a small number of passengers or goods over short distances.
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Provides door-to-door services, reducing loading and unloading costs.
Q3. Explain how transportation and communication help in the economic development of a country.
Answer:
Transportation connects cities and towns, enabling surplus production to reach markets, thus boosting economic growth.
It supports industrialisation by moving raw materials to factories and finished goods to markets.
Communication helps in exchanging knowledge and ideas, contributing to overall economic progress.
Q4. What was the impact of discovery of fire, wheel and iron on the life of human beings?
Answer:
These discoveries transformed human life and marked milestones in civilisation. Tools became sophisticated, farming began near river banks, and people started leading a settled life. They built permanent homes, domesticated animals, and made clothes from fibre.
Q5. How has computer technology revolutionised the process of communication?
Answer:
Computers have changed communication through e-mail, internet, CDs, pen drives, and laptops. People can access any information worldwide from home. It has made communication faster, easier, and more efficient.
