Class-X-Solved Exercise:
Unit-5- Sustainable Development
I. Multiple choice questions. Tick the correct answer.
1. Which of these is an environmental changes caused due to modern methods of agriculture?
a. improvement water quality
b. pollution due to chemical fertilizers
c. improvement in soil quality
d. improvement in air quality
Answer: Pollution due to chemical fertilizers
2. A steel factory burns firewood and charcoal for heating and melting steel. What are the possible effects on the environment? (More than one options can be correct).
a. increase in global temperature
b. decrease in global temperature
c. increase in air pollution
d. decrease in air pollution
Answer: Increase in air pollution
3. Which of these is a renewable source of energy?
a. coal
b. petrol
c. wind power
d. diesel
Answer: Wind power
4. Which of these is non-renewable source of energy?
a. wind power
b. solar power
c. hydroelectricity
d. coal
Answer: Coal
5. Which of the following best explains the sustainable development?
a. sustained economic development
b. economic development without endangering natural resources
c. economic development at zero cost
d. economic development to ensure eradication of poverty
Answer: Sustained economic development
II. Fill in the blanks:
1. Our_______ is an integral part of our existence.
Answer: Environment
2. The ______ is a type of development that meets the needs of the current generation without compromising the ability of the future generations to meet their own needs.
Answer: Sustainable Development
3. Human interaction with the ____ for developmental purposes has impacted it negatively.
Answer: Environment
4. A _______ is one that promotes economic development while making sure that the environment is protected.
Answer: Green Economy
5. The _____ skills also known as the skills for sustainability are the technical skills, knowledge and values needed in the workforce to support a green economy.
Answer: Green
III. Short Answer Questions.
1. What is meant by sustainable development?
Answer: Sustainable Development is defined as a type of development that meets the needs of the present, without compromising the ability of the future generations to meet their own needs. To achieve sustainable development we need to manage our resources in such a way that they continue to serve our interests as well as remain available for the benefit of future generations.
2. Write some steps to prevent the damage that industrial activities are causing to our environment.
Answer:
1. Support local, organic and natural farming
2. Eat seasonal and locally grown food.
3. Don't waste electricity.
4. Select clean, renewable energy sources like solar lights.
5. Using local construction materials.
6. Industries make items according to what customers prefer to buy.
7. Teach green skills to your employees.
8. Save and recycle paper to protect trees from being cut.
9. Walk or cycle while going to nearby places.
10. Use electric vehicles if possible.
3. What are green jobs? Give some examples of green jobs.
Answer: Green jobs or green-collared jobs are jobs that contribute substantially to preserving or restoring the natural environment. This includes jobs that help to protect ecosystems and biodiversity; reduce energy, materials and water consumption through high efficiency strategies; Examples of some green jobs are: Conservation Biologist, Natural scientists, Recyclers.
4. What role does the development of renewable sources of energy play in sustainable development?
Answer: High use of renewable energy: Most of the energy in a green economy comes from the renewable energy sources such as sun, wind, water, earth and biomass that are available in a plenty and produce nor or negligible pollution. India is one of the largest producers of renewable energy in the world. Currently, the Kamuthi Solar plant in Tamil Nadu is the world's second largest solar park.
5. What are green economies?
Answer: A green economy is one that promotes economic development while making sure that the environment is protected. In a green economy, growth in employment and income are driven by public and private investment in such economic activities, infrastructure and assets that are environmentally-friendly.
6. Write a note on green skills.
Answer: Green skills or skills for sustainability are the technical skills, knowledge, values and attitudes needed in the workforce and individuals to develop and support green economies.
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