NCERT Solutions for Class 8 Social Science Geography Chapter 3 Minerals and Power Resources

NCERT Solutions for Class 8 Social Science Geography Chapter 3 Minerals and Power Resources: Students of class 8 must go through Class 8 Geography Chapter 3 question answer based on NCERT to understand the topic more deeply. NCERT Solutions for Class 8 Social Science Geography Chapter 3 Minerals and Power Resources are provided in this article for students to secure good marks in the board exam. A Mineral is a naturally occurring substance with a definite chemical composition. Minerals are concentrated in a particular area or rock formation. To understand the Geography Chapter 3 Class 8 Minerals and Power Resources, students must read the solutions given in this article below for the Geography Class 8 Chapter 3 Minerals and Power Resources. 

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Class 8 Geography Chapter 3 Question Answer

Students can go through the Geography class 8 Chapter 3 Minerals and Power Resources questions and answers below

Question 1.
Answer the following questions.
(i) Name any three common minerals used by you every day.
(ii) What is an ore? Where are the ores of metallic minerals generally located?
(iii) Name two regions rich in natural gas resources.
(iv) Which sources of energy would you suggest for
(a) rural areas (b) coastal areas (c) arid regions
(v) Give five ways in which you can save energy at home.
Answer:
(i) Three common minerals used by us in day-to-day life are copper, iron and salt.

(ii) Ore is the raw me tat-found in the earth mixed with other materials or impurities.
They are generally located in igneous or metamorphic rocks.

(iii) Two regions in India rich in natural gas resources are Jaisalmer and Krishna-Godavari delta.

(iv) (a) For rural areas, solar energy and wind energy are feasible options. There aren’t many high-rise buildings to act as an obstacle for sunlight or to break the momentum of wind. ”
(b) For coastal areas, wind energy and tidal energy are good choices.

(c) For arid regions, wind energy and solar energy are feasible, for reasons similar to rural areas.

(v) Five ways in which one can save energy at home:

• Promoting the use of solar energy as much as possible.

• Using biogas as cooking fuel.

• Drying clothes in sunlight instead of electric dryers to prevent emissions and unnecessary use of electricity.

• Avoiding misuse of electricity; switching off fans and lights when not required.

• Using pressure cookers for cooking.

Read More: NCERT Solutions for Class 8 Social Science Geography Chapter 1

Question 2.
Tick the correct Answer:
(i) Which one of the following is not a characteristic of minerals?
(a) They are created by natural processes.
(b) They have a definite chemical composition.
(c) They are inexhaustible.
(d) Their distribution is uneven.

(ii) Which one of the following is not a producer of mica?
(a) Jharkhand
(b) Karnataka
(c) Rajasthan
(d) Andhra Pradesh

(iii) Which one of the following is a leading producer of copper in the world?
(a) Bolivia
(b) Ghana
(c) Chile
(d) Zimbabwe

(iv) Which one of the following practices will not conserve LPG in your kitchen?
(a) Soaking the dal for some time before cooking it.
(b) Cooking food in a pressure cooker.
(c) Keeping the vegetables chopped before lighting the gas for cooking.
(d) Cooking food in an open pan kept on low flame.
Answer:
(i) (c), (ii) (b), (iii) (c), (iv) (d).

Read More: NCERT Solutions for Class 8 Social Science Geography Chapter 2

Question 3.
Give reasons.
(i) Environmental aspects must be carefully looked into before building huge dams.
(ii) Most industries are concentrated around coal mines.
(iii) Petroleum is referred to as “black gold”.
(iv) Quarrying can become a major environmental concern.
Answer:
(i)

• Because of the following reasons:

• Dams create an imbalance in the earth’s equilibrium.

• Deforestation leads to environmental pollution.

• People are displaced.

• Cities/villages/towns are shifted causing untold hardships to people.

• Flood threats loom large.

• Earthquake threats.

• Silting of lakes a problem.

(ii) The presence of coal mines around industries reduces the costs of transportation and also ensures easy availability of fuel.
(iii) Petroleum is a very valuable fossil fuel. It is used for running all types of machinery, and transport vehicles, from a bicycle to an aeroplane.

(iv) After quarrying, pits are not covered so they may cause environmental hazards.

Question 4.
Distinguish between the following.
(i) Conventional and non-conventional sources of energy.
(ii) Biogas and natural gas.
(iii) Ferrous and non-ferrous minerals
(iv) Metallic and non-metallic minerals.
Answer:
(i)

Question 5 

Choose the correct option.
(i) Which of these is a non-metallic mineral?
(a) Iron ore
(b) Bauxite
(c) Limestone
(d) Manganese ore

(ii) Which continent produces more than half of the world’s tin?
(a) Africa
(b) Asia
(c) Europe
(d) South America

(iii) Which continent is the leading producer of iron ore in the world?
(a) North America
(b) Asia
(c) Europe
(d) Australia

(iv) Which state is a major bauxite producing area?
(a) Goa
(b) Madhya Pradesh
(c) Assam
(d) Tamil Nadu

(v) What is the name given to the electricity produced from coal?
(a) Nuclear power
(b) Thermal power
(c) Fossil fuel
(d) None of these

(vi) Which of these is a conventional source?
(a) Coal
(b) Petroleum
(c) Natural gas
(d) All of these

(vii) Which of these is called buried sunshine?
(a) Petroleum
(b) Coal
(c) Solar energy
(d) Tidal energy

Answer:
(i) (c), (ii) (b), (iii) (c), (iv) (b), (v) (b), (vi) (d), (vii) (b).

Question 6 

Fill in the blank spaces given to complete each sentence.

1. Metallic minerals are classified into …………….. and ………….

2. Gold and silver are …………. minerals.

3. Minerals can be extracted by ………….,…………., or …………

4. Deep bores dug to reach mineral deposits are called …………

5. Metallic minerals are generally found in ……….. and…………..rock formations.

6. The mineral deposits in North America have located in three zones: …………… the Appalachian region and the mountain ranges of the West.

7. …………… is the largest producer of bauxite in the world.

8. …………. is the most abundantly available fossil fuel.

9. Petroleum is drilled from ………

10. Bhakra Nangal is an important …………….. station in India.

11. …………… and……… are radioactive metals.

Answer:

1. ferrous, non-ferrous

2. non-ferrous

3. mining, drilling, quarrying

4. shafts

5. igneous, metamorphic

6. the Canadian region north of the Great Lakes

7. Australia

8. Coal

9. Oil fields

10. hydel power

11. Uranium, thorium.

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Question 7 

State whether each of the following statements is true (T) or false (F).

1. All ores are rocks but all rocks are not minerals.

2. Quarrying is good for the environment.

3. Mineral fuels like coal and petroleum are found in sedimentary strata.

4. Coal is more predominant in the Canadian Shield Region than the Appalachians.

5. Chile and Peru are leading producers of copper.

6. Kolar in Karnataka has large deposits of silver.

7. Copper is an element used in almost everything.

8. Bauxite is the ore of aluminium.

9. Nuclear power can be produced from the nuclei of most elements.

Answer:

1. Ture

2. False

3. Ture

4. False

5. True

6. False

7. True

8. True

9. False

Question 8

Differentiate between a rock and an ore.

Answer: A rock is an aggregate of one or more minerals. An ore is a rock from which minerals are mined.

Question 9 Define quarrying.

Answer: Quarrying is a process of extraction in which minerals lying near the surface are simply dugout.

Question 10 Name the leading tin producers in Asia.

Answer: China, Malaysia, and Indonesia are leading tin producers in Asia.

Name two areas in Australia, which have large deposits of gold.

Question 11.Name two minerals in whose production India contributes a significant part.
Answer: India has vast deposits of high-grade iron ore, and it is also a leading producer of salt.

Question 12. In which industry is silicon important? From which ore is it obtained?
Answer: Silicon is important in the computer industry. It is obtained from quartz.

Question 13. Why are minerals considered non-renewable?
Answer: Minerals take thousands of years to form. The rate of formation is much smaller than the rate of consumption. So we classify them as non-renewable.

Question 14. Why is coal called “buried sunshine”?
Answer: Coal is called “buried sunshine” because it is found buried under the earth, and is as important a source of energy as sunshine.

Question 15. Why are petroleum and its derivatives called “black gold”?
Answer: Petroleum and its derivatives are black in colour but as valuable as gold, so we refer to it as “black gold”.

Question 16. What is natural gas?
Answer: Natural gas is a fossil fuel obtained with petroleum deposits in oil fields.

Question 17. Which was the first country to develop hydroelectricity?
Answer: Norway was the first country to develop hydroelectricity.

Question 18. Name some important hydel power stations in India.
Answer: Bhakra Nangal, Gandhi Sagar, Nagaijunasagar, and Damodar Valley Projects are important hydel power stations in India.

Question 19. Name nuclear power stations in India.
Answer: Kalpakkam, Tarapur, Ranapratap Sagar, Narora, and Kaiga are the nuclear power stations in India.

Question 20. Give one advantage of biogas over natural gas.
Answer: Biogas is a renewable source of energy whereas the amount of natural gas is limited.

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Geography Class 8 Chapter 3 Minerals and Power Resources Summary

Geography Class 8 Chapter 3 includeds minerals and power resources, which are important for our daily lives and the economy.

Minerals are naturally occurring substances found in the earth. They come in various forms like ores, rocks, and gems. Minerals are used to make products we use every day, such as cars, computers, and buildings. They are classified into two main types: metallic and non-metallic. Metallic minerals, such as iron, gold, and copper, are used to make things like machinery and jewelry. Non-metallic minerals, such as salt, limestone, and marble, are used in construction and other industries.

Power resources are sources of energy that we use to power our homes, vehicles, and industries. These include renewable and non-renewable resources. Renewable resources, like solar, wind, and hydro (water) energy, can be replenished naturally and are better for the environment. Non-renewable resources, like coal, oil, and natural gas, cannot be replaced once used and can lead to environmental problems like pollution.

The chapter also highlights the importance of managing these resources carefully. Overuse of non-renewable resources can lead to depletion and environmental damage, so it's important to use them wisely and explore alternative sources of energy.

Understanding minerals and power resources helps us appreciate their value and the need to conserve them for the future.

Benefits of Studying Geography Chapter 3 Class 8 Solutions

There are several benefits of studying Geography Chapter 3 Class 8 solutions while preparing for the exam. The benefits include

• Better Understanding: The solutions explain concepts clearly, making it easier to understand what minerals and power resources are and how they are used.

• Improved Exam Results: By practicing with these solutions, you can get better at answering questions and improving your scores in exams.

• Reinforced Learning: The detailed answers help you remember important facts and ideas from the chapter, like the difference between renewable and non-renewable resources.

• Better Problem-Solving: Working through the solutions helps you think critically and solve problems related to minerals and energy sources.

• Useful for Revision: The solutions are great for revising the chapter, and helping you review important points before exams.

• Organized Learning: The solutions follow the textbook's order, making it easier to study the chapter in a logical way.

• Increased Confidence: Practicing with these solutions helps you feel more confident about your knowledge and reduces exam stress.

Class 8 Geography Chapter 3 Minerals and Power Resources FAQs

Q1. What are mineral resources?

Ans. Minerals can be found in the various types of rocks. Different types of minerals can be found in different types of rocks such as igneous rock, metamorphic rocks, and sedimentary rocks. 

Q2. What is the name of chapter 3 in class 8 geography?

Ans. The name of chapter 3 in class 8 geography is Mineral and Power Resources. 

Q3. What are the energy and power resources?

Ans. The energy and power resources are coal, oil, and natural gas. These sources of energy are low in cost but they are very harmful to the environment. Solar energy, geothermal energy, wind energy, and hydropower are some examples of non-conventional sources of energy which are clean sources. 

Q4. What are the two main types of minerals?

Ans. The two main types of minerals are Metallic Minerals and Non-metallic Minerals. 

Q5. Is gold a mineral?

Ans. Gold is considered both a mineral and an element. Gold is often found as a native metal in nature.