DAV PUBLIC SCHOOL CLASS 8 social science chapter 1 questions answer.
Lesson 1 Resources:Utilization and Development
Section E
1Ans- Human needs & wants are neither uniform in all parts of the world nor static over years.They
generally grow and become complex with the process of change in the society.In ancient
times,emphasis was mainly given on satisfying the basic needs Ex- food,clothing & shelter.which was
the derived from the natural environment.Even today,the pygmiesof Africa eat edible
plants,roots,flowers and fruits and hunt animals.
In advanced societies,greater emphasis has been
given to utilisation of resources for satisfying the multifarious needs of human beings.
2. Ans- Renewable Resources
1.Renewable resources are the natural assets,that can be replenished in the future .
2.Renewable resources are also called as Non- Conventional sources of energy.
3.Ex- (a) Solar energy (b) Wind energy
Non- Renewable Resources
1.The Non- Renewable Resources are available in fixed quantity.
2.The Non- Renewable Resources are also called as Conventional Sources of energy.
3.Ex- ( a) coal (b) petroleum
I would always prefer to use renewable resources because ,they can be replenished easily and can be
used again and again .
3.Ans- Sustainable development means,development that takes place without damaging the
environment .
Sustainable development is the need of the hour because-
1.It saves national budget.
2.Fulfills the need of the people.
3.Conserves the Natural Resources.
4.Helps in the co-ordination between the Natural Resources and people.
5.Conserves Natural Resources for future generation.
4.Ans- Resources can be classified on different bases in to following types.
Classification based on Renewability -:
1.Renewable or inexhaustible resources-:
Resources ,which can be renewed either naturally or by human efforts,are known as renewable or
inexhaustible resources.Ex- Solar energy, Air,Water
2. Non- Renewable or Exhaustible resources:-
Resources which take millions of years to form or renew, are known as Non- Renewable or Exhaustible
Resources.
Ex- Coal,Petroleum,Natural Gas.
Classification based on Origin.-:
1.Biotic Resources -:
Resources which are obtained from biosphere and have life (living beings),are known as biotic resources.
Ex- Bird,Animals,Fish,Forests
2.Abiotic Resources-:
All non- living resources are known as abiotic resources.
Ex- Land,Water,Minerals
Classification based on occurance -:
1. Natural Resources-:
Resources ,available from nature and used by human beings to satisfy their needs,are known as
Natural Resources.
Ex- Water,Minerals,Forests.
2. Man- made Resources-:
Resources created by human beings to satisfy their needs, are known as Man-made Resources.
Ex- Roads,Buildings,Machines.
Classification based on the Development of Resources.
1. Potential Resources-:
Available resources in a country,which are not fully tapped,are known as potential Resources.
Ex- Petroleum( In Himalayan region)
Oil & Natural Gas ( In Arctic sea- bed)
2. Actual Resources-:
The actual resources of a country are those which have been thoroughly Surveyed and their
quantities have been ascertained.
Ex- Saudi- Arabia has 25.9% of the world oil reserves.
Answers
Answer:
Lesson 1 Resources:Utilization and Development
Section E
1Ans- Human needs & wants are neither uniform in all parts of the world nor static over years.They
generally grow and become complex with the process of change in the society.In ancient
times,emphasis was mainly given on satisfying the basic needs Ex- food,clothing & shelter.which was
the derived from the natural environment.Even today,the pygmiesof Africa eat edible
plants,roots,flowers and fruits and hunt animals.
In advanced societies,greater emphasis has been
given to utilisation of resources for satisfying the multifarious needs of human beings.
2. Ans- Renewable Resources
1.Renewable resources are the natural assets,that can be replenished in the future .
2.Renewable resources are also called as Non- Conventional sources of energy.
3.Ex- (a) Solar energy (b) Wind energy
Non- Renewable Resources
1.The Non- Renewable Resources are available in fixed quantity.
2.The Non- Renewable Resources are also called as Conventional Sources of energy.
3.Ex- ( a) coal (b) petroleum
I would always prefer to use renewable resources because ,they can be replenished easily and can be
used again and again .
3.Ans- Sustainable development means,development that takes place without damaging the
environment .
Sustainable development is the need of the hour because-
1.It saves national budget.
2.Fulfills the need of the people.
3.Conserves the Natural Resources.
4.Helps in the co-ordination between the Natural Resources and people.
5.Conserves Natural Resources for future generation.
4.Ans- Resources can be classified on different bases in to following types.
Classification based on Renewability -:
1.Renewable or inexhaustible resources-:
Resources ,which can be renewed either naturally or by human efforts,are known as renewable or
inexhaustible resources.Ex- Solar energy, Air,Water
2. Non- Renewable or Exhaustible resources:-
Resources which take millions of years to form or renew, are known as Non- Renewable or Exhaustible
Resources.
Ex- Coal,Petroleum,Natural Gas.
Classification based on Origin.-:
1.Biotic Resources -:
Resources which are obtained from biosphere and have life (living beings),are known as biotic resources.
Ex- Bird,Animals,Fish,Forests
2.Abiotic Resources-:
All non- living resources are known as abiotic resources.
Ex- Land,Water,Minerals
Classification based on occurance -:
1. Natural Resources-:
Resources ,available from nature and used by human beings to satisfy their needs,are known as
Natural Resources.
Ex- Water,Minerals,Forests.
2. Man- made Resources-:
Resources created by human beings to satisfy their needs, are known as Man-made Resources.
Ex- Roads,Buildings,Machines.
Classification based on the Development of Resources.
1. Potential Resources-:
Available resources in a country,which are not fully tapped,are known as potential Resources.
Ex- Petroleum( In Himalayan region)
Oil & Natural Gas ( In Arctic sea- bed)
2. Actual Resources-:
The actual resources of a country are those which have been thoroughly Surveyed and their
quantities have been ascertained.
Ex- Saudi- Arabia has 25.9% of the world oil reserves.
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Explanation:
Answer:
Human wants are many, and we humans mainly turn to natural resources to fulfill these very needs.
Explanation:
We need energy to get many things done, like cooking, washing, traveling, etc. The resources that help us create energy can be broadly divided into two types:
- Renewable resources are those naturally found resources that we can use as much as we want because they would not end or get depleted. Eg Wind energy and solar energy.
- Non-renewable resources, on the other hand, have to be used mindfully as we have only a limited supply of them and they will get depleted. Eg. wood and coal.
Alternatively, renewable resources are also known as inexhaustible resources, and non-renewable resources are also called exhaustible resources.