Important Questions Class 8 Social Science Resources and Development Chapter 3

Important Questions Class 8 Social Science Resources and Development Chapter 3

Geography is a fascinating discipline that studies the landforms, seas, environments, and ecosystems of the planet and the relationships between human culture and its surroundings. Geography translates as “earth writing”. The third chapter of Class 8 Social Science Resources and Development is Mineral and Power Resources. India is rich in a wide range of mineral resources due to its diverse geological structure. A mineral is a naturally occurring material having a specific chemical makeup. The mineral is dispersed across the planet’s rocky crust, not uniformly distributed throughout space. Over 3,000 distinct types of minerals exist. Based on composition, minerals are primarily divided into metallic and non-metallic categories. These concepts are covered in Chapter 3 Class 8 Social Science Resources and Development Important Questions. Students can easily access all this and more on the Extramarks website.

Students must constantly pay attention to subjects such as Geography and do constant revisions. Extramarks professionals have developed Social Science Resources and Development Class 8 Chapter 3 Important Questions using NCERT Textbook, NCERT Exemplar, other reference books, past exam papers, and other sources. Geography subject experts have compiled a list of step-by-step solutions to assist students in understanding each chapter. Students can register now with Extramarks and access Class 8 Social Science Resources and Development Chapter 3 Important Questions. 

Along with Important Questions Class 8 Social Science Resources and Development Chapter 3, students can access materials like NCERT Solutions, CBSE revision notes, past year question papers, NCERT books, and much more can be found easily on the Extramarks website.

Important Questions Class 8 Social Science Resources and Development Chapter 3- with Solutions

Social Science experts of Extramarks have produced an entire list of Important Questions Class 8 Social Science Resources and Development Chapter 3 using different sources. Due to its unique geological structure, India is abundant in a wide variety of mineral resources. A mineral is a substance that occurs naturally and has a certain chemical composition. The mineral is not evenly distributed across space; it is spread throughout the planet’s hard crust. There are more than 3,000 different kinds of minerals. Minerals are typically separated into metallic and non-metallic groups based on composition. These questions and solutions help students better comprehend Mineral and Power Resources.

Given below are a few Important Questions Class 8 Social Science Resources and Development Chapter 3 and their solutions:

Question 1. What is an ore? Where are the ores of metallic minerals generally located?

Answer 1. Ores are rocks that are mined for their mineral content. Various kinds of rocks include different minerals. Some are found in sedimentary rocks, whereas others are found in metamorphic or igneous rocks. In igneous and metamorphic rock formations that generate huge plateaus, metallic mineral ores can be discovered.

Question 2. What factors need to be taken into account before a dam is built?

Answer 2. Every aspect of the local ecosystem must be considered while building large dams. This guarantees that the intended location can survive severe flooding and is not susceptible to natural calamities. If not, nearby population areas and agricultural land might also be devastated. When a river dries up due to a dam’s water stoppage, it frequently robs the livelihood of people who live along the river on which the dam is being built. No one’s means of support may be compromised, and the government must ensure this.

Question 3. Give five ways in which you can save energy at home.

Answer 3. Following are the five ways in which one can save energy at home:

• When not in use, turn off the lights, TV, and electric fans.
• Ensuring that the tap is correctly closed to prevent dripping
• Preparing food in a pressure cooker.
• For short journeys, commuters might choose to walk or ride bicycles.
• Reducing the usage of elevators, air conditioners, and freezers.

Question 4. Describe wind energy.

Answer 4. It is believed that the wind is an endless source of energy. Windmills have been used for crushing grain and raising water for a long time. Currently, power is produced via the rotation of a windmill connected to a generator. Wind farms with groups of these windmills are found in coastal areas and mountain gorges with strong, patterned winds. Wind energy is famously produced by wind farms in the Netherlands, Denmark, Germany, the United States, the United Kingdom, and Spain.

Question 5. Name any three minerals used by you every day.

Answer 5. The most common minerals that people regularly utilise are salt, petroleum, and gold.

Question 6. Explain the differences between conventional and non-conventional energy sources.

Answer 6. Conventional energy sources have been used in daily life for a very long period. Traditional energy sources include coal, oil, hydropower, fossil fuels, and firewood. In the modern world, non-conventional energy sources are increasingly accessible and sought energy sources. These resources do not degrade over time since they may be produced once again. Non-conventional energy sources, including wind, solar, tidal, and organic waste, employ renewable energy sources.

Question 7. Name two regions rich in natural gas resources.

Answer 7. The two countries that generate the most natural gas are the UK and the Netherlands. Petroleum reserves are also home to natural gas, produced when crude oil is transported to the surface. It is a fuel for both home and commercial purposes.

Question 8. Explain why quarrying may be disastrous.

Answer 8. The process of quarrying involves removing minerals from the earth’s surface.

Quarrying has the ability to damage the ecosystems nearby or cause ecological imbalance by eliminating habitats, making it a major environmental risk. The nearby populace may have health issues as a result of the noise produced by explosions and large gear employed in quarries. Both the earth and the air may get contaminated. Quarrying produces a large quantity of dust and noise. Both the environment and the human ear may get affected by this.

Question 9. Give reasons for the following:

• Environmental aspects must be carefully looked into before building huge dams.

• Most industries are concentrated around coal mines.

• Petroleum is referred to as “black gold”.

• Quarrying can become a major environmental concern.

Answer 9. The following are the reasons for various environmental concerns:

1. Natural vegetation and fauna in the submerged regions are destroyed on a vast scale due to the construction of a massive dam. The ecology will not benefit from this. Therefore, before constructing large dams, environmental concerns must be thoroughly considered.
2. Since coal is an important energy source and it reduces transportation costs, most enterprises are close to coal mines.
3. Petroleum is a thick, black liquid which is a  vital resource for many industries. It is very valuable.. Thus, it is sometimes referred to as “Black Gold.”
4. Quarrying causes a lot of issues. Around a quarrying site, fine dust particles are dispersed in the air. Quarry dust particles might bring on respiratory issues. Quarrying also eliminates the natural flora that serves as many wild animals’ habitats.

Question 10. Describe biogas.

Answer 10. In contrast to natural gas, which is freely available and is extracted from the earth’s interior together with petroleum, it is a renewable source of energy.  Biogas is energy created from biological waste and it should not be confused with natural gas which is a non-renewable resource.

Question 11. Distinguish between the following:

• Conventional and non-conventional sources of energy

• Biogas and natural gas

• Ferrous and nonferrous minerals

• Metallic and nonmetallic minerals

Answer 11. The following are the differences:

1. Conventional and non-conventional sources of energy: Conventional energy sources are ones that have been widely used for a very long period. The two primary conventional energy sources are fossil fuels and firewood. Contrarily, non-conventional sources are contemporary substitutes for conventional energy sources. Non-conventional energy sources include the utilisation of renewable energy sources such as wind, tidal, and organic waste.
2. Biogas and natural gas: Biogas is the gaseous fuel produced by the breakdown of organic waste, such as dead plants, dead animals, animal faeces, and kitchen trash. An enormous amount of organic manure is produced annually by biogas, which is a combination of methane and carbon dioxide. Whereas when crude oil is brought to the surface, natural gas is removed together with the petroleum resources.
3. Ferrous and nonferrous minerals: Iron is present in ferrous minerals and they are metallic in nature such as chromites, manganese, and iron ore. On the other hand, non-ferrous minerals do not contain iron and are non-metallic in nature such as gold, silver, copper, and lead. 
4. Metallic and nonmetallic minerals: Metallic minerals contain unprocessed metal. Metallic minerals include, for example, bauxite and manganese. While nonmetallic minerals, including gypsum, mica, and limestone, do not contain any metal components.

Question 12. What does “nuclear power” mean? Describe the procedure for obtaining it. Additionally, list the locations of India’s nuclear power plants.

Answer 12. The energy contained in the nucleus of atoms of naturally occurring radioactive elements like uranium and thorium, such as these two, is used to generate nuclear power. In nuclear reactors, these fuels experience nuclear fission and produce energy. America and Europe are the two regions that produce the most nuclear energy. Large uranium resources may be found in Jharkhand and Rajasthan in India.

The Monazite sands of Kerala contain significant amounts of thorium. The nuclear power plants in India are situated in the states of Tamil Nadu’s Kalapakkam, Maharashtra’s Tarapur, Rajasthan’s Ranapratap Sagar in Kota, Uttar Pradesh’s Narora, and Karnataka’s Kaiga.

In the above section of Important Questions Class 8 Social Science Resources and Development Chapter 3, all the essential topics of the chapter are covered.

Benefits of Solving Important Questions Class 8 Social Science Resources and Development Chapter 3

Since Geography inherently piques students’ interest, it is important that they often read and go through it while revising. It will clarify their doubts and strengthen their understanding. It is recommended that students use Extramarks Important Questions Class 8 Social Science Resources and Development Chapter 3. Students gather confidence by answering the important questions and going over their solutions. This list of important questions can make this subject easy to understand for the students.

Here are some benefits of solving Important Questions Class 8 Social Science Resources and Development Chapter 3:

• These important questions are prepared by following the exam writing pattern. Going through these will help students prepare for exams too. They are authentic and reliable since they are prepared by subject matter experts with years of experience to encourage and guide students through their learning experience.
• Students can entirely rely upon these crucial questions as these are made following all the guidelines laid by CBSE and they follow the NCERT book. If they ever get stuck on a question, they can always refer to the important questions for clear understanding.
•  Important Questions Class 8 Social Science Resources and Development Chapter 3 covers the concepts of the entire chapter- Mineral and Power Resources. The subject experts have restructured the information into different formats to enable a smooth and deep learning experience so that students need not look elsewhere to supplement their studies to better their performance.

Extramarks provides comprehensive learning solutions for students from Class 1 to Class 12. Along with important questions and solutions, we have abundant resources available on our website. Students can click on the links given below to access some of these resources:

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