DAV Class 8 SST Chapter 1 Question Answer Resources Utilisation and Development
DAV Class 8 SST Chapter 1 Resources Utilisation and Development Solutions
A. Tick the correct option.
1. Future generations will depend on solar energy because it is-
Answer: inexhaustible
2. Which one of the following resources can be recycled?
Answer: gold
3. All the abiotic resources include-
Answer: non-living things
4. Available resources that are not being tapped fully for the time being are called-
Answer: potential resources
5. Which one does not promote the conservation of resources?
Answer: use as much resources as required
B. Fill in the blanks.
1. ___________ can be used again and again after processing.
2. On the basis of occurrence, resources are classified into two categories ___________ and ___________.
3. With the advancement of technology, the availability of ___________ and ___________ labour are necessary for resource utilization.
4. Developed countries are economically self-sufficient and ___________ advanced.
5. The ___________ resources need a detailed survey to estimate their quantity and quality.
Answer: (1) Metals (2) natural, man-made (3) capital, skilled (4) technologically (5) potential.
C. Write technical term or an appropriate word for each of the following statement
1. Any material which is used to satisfy human needs.
Answer: Resources
2. Resources which cannot be renewed.
Answer: Non-renewable Resources
3. Resources which are created by human beings.
Answer: Man-made resources
4. The resources which are surveyed and developed.
Answer: Actual resources
5. Sustainable and optimum utilisation of resources.
Answer: Conservation
D. Answer the following questions in brief.
1. ‘Utility and value of a resource vary from time to time and place to place.’ Give any three examples to support the statement.
Answer: The utility and value of resources vary from time to time and place to place in the following ways:
- Earlier human civilizations florist along the river valleys as they used water for irrigating fields.
- Now, humans are using water to generate energy, irrigation, navigation industries, etc.
- China and the United States of America are generating more wind energy than India.
2. Why are human beings considered the most important resource for development?
Answer: Human beings are considered the most important resource for development because they have an intelligent mind that can use nature best to create more resources. The utility of resources can only be realized by human beings.3. Differentiate between biotic and abiotic resources. Give examples for each.
Answer: Resources that are obtained from the biosphere and have a life are known as biotic resources. e.g., birds, animals, plants, etc. While all non-living resources are known as abiotic resources. e.g., land, soil, minerals, water, etc.
4. Why is there a need for resource planning? Give any three reasons.
Answer: Resource planning is important because of the following reasons:
- It helps in keeping track of remaining resources.
- It helps in the conservation of various non-renewable resources.
- It helps in equal distribution of resources among regions with acute shortages.
5. Mention any six factors on which the utilization of resources depends.
Answer: The six factors on which the utilization of resources depends are:
- Availability of resources
- Skill of human beings
- Availability of Capital
- Advancement of technology (tools, machines, etc.)
- Availability of transport
- Availability of water
E. Answer the following questions.
1. ‘Human needs and wants are neither uniform in all parts of the world nor static over the years.’ Explain the statement giving suitable examples.
Answer: It is a fact that human needs and wants are neither uniform in all parts of the world nor static over the years. For example: In ancient times, people were mainly trying to fulfill their basic needs such as food, clothes, and shelter, which were derived from nature. In an advanced society, emphasis has been given to utilization of resources for satisfying the multifarious needs of human beings.
2. Distinguish between renewable and non-renewable resources. Which one of the two would you prefer to use and why?
Answer: Renewable resources: These resources can be renewed either naturally or by human efforts. These are also called inexhaustible resources. The quality of these resources can be affected by improper use. E.g., solar energy, wind energy, etc.
Non-Renewable Resources: These resources can’t be renewed. These are also called exhaustible resources. These are limited on the earth’s surface and their complete utilization can result and exhaustion. E.g., oil, coal, etc.
I would prefer renewable resources because it is not harmful to nature and they will reduce dependency on the conservation of non-renewable resources.
3. What is meant by sustainable development? Why is sustainable development the need of the hour?
Answer: Sustainable development means development that takes place without damaging the environment.
It is the need of the hour because most of the resources are limited in quantity. Overuse of many resources has led to their depletion. Therefore, resources should be utilized judiciously so that after fulfilling our present needs, they are also conserved for future generations.
4. Describe the various bases of classification of resources with the help of examples.
Answer: Classification of resources:
Based on exhaustibility:
- Renewable resources (water, sunlight, air).
- Non-renewable resources (coal, oil).
Based on origin:
- Biotic resources (birds, animals, plants).
- Abiotic resources (water, land).
Based on occurrence:
- Natural resources (water, land, minerals).
- Man-made resources (roads, buildings, bricks).
Based on development:
- Potential resources (uranium in Ladakh).
- Actual resources (black soil in Maharashtra).
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