Define mineral in brief and explain how they are formed without any human interference. The electricity generated from hydropower is called hydroelectricity. Name the petroleum producing countries in the world. Dams create imbalance in the earth’s equilibrium. Some gemstones like turquoise, garnet, amethyst, aquamarine, topaz, moonstone, peridot and opal are not as rare and are known as semi-precious stones. Q3. India is also one of the leading producers and exporters of salt. Q1. Power resources are required for industrial and domestic use, agriculture, transport, communication and defence. producers of tin. Chile and Peru are leading producers of copper. Write a short note on distribution of minerals in Europe. Designed using Magazine Hoot. Students can just click on the PDF link provided below in this article, from where they can access the CBSE Notes Class 8 Geography Chapter 3-Mineral and Power Resources. a. Some gemstones like diamonds, sapphires, emeralds and rubies are rare and very expensive and are known as precious stones. Firewood and fossil fuels are two main conventional energy sources. Coal is used as a source of energy and power and also as a raw material in most of the industries. Mineral is defined as a “homogenous, naturally occurring substance with a definable internal structure.” Minerals are found in varied forms in nature, ranging from the hardest diamond to the softest talc. is the process of taking out minerals from rocks that are buried under the earth’s surface, minerals are taken out from the shallow depths by removing the surface layer, deep bores called shafts are made to reach the mineral deposits that are deep under the soil layer, is where deep wells are bored to take the minerals out, is where minerals that lie near the surface are simply dug out. These Extra Questions with solution are prepared by our team of expert teachers who are teaching grade in CBSE … They are created by natural processes. Enrichment basically either occurs in trap situations of varied origins or by weathering processes. Ans. Answer the following questions. d. eveloPMent. Save my name, email, and website in this browser for the next time I comment. Land, Soil, Water, Natural Vegetation and Wildlife Resources – Chapter 2 Geography Class 8 NCERT Solutions, India | Size and Location – Chapter 1 Geography Class 9 NCERT Solutions, Migration| Types, Causes & Consequences – Chapter 2 Class 12 NCERT Geography, Population | Distribution, Density, Growth & Composition – Chapter 1 Class 12 NCERT Geography, Everything on Ramsar Convention – Wetlands in India | UPSC, IAS, CDS, NDA, SSC CGL, Types of Forests in India – Evergreen, Deciduous, Thorny, Montane, Littoral Swamp | UPSC, IAS, CDS, NDA, Biodiversity and Conservation – Chapter 16 Class 11 Geography NCERT Solutions, Switching off lights, fans: and other electrical appliances when not in use, By seeing to it that electrical devices are operating efficiently; for example, defrosting refrigerator regularly and not keeping the refrigerator door open for longer than necessary, Using energy-efficient devices such as fluorescent bulbs and tubes, Using energy efficiently while cooking; for example, keeping the lids of pans on while cooking. Rocks from which minerals are mined are known as ores. 28 RESOURCES AND DEVELOPMENT Activity On an outline map of India, mark the distribution of iron, bauxite, manganese and mica with the help of an atlas. Switzerland has no known mineral deposit in it. Petroleum is referred to as “black gold” because it is black in colour in the crude form and its derivatives are extremely valuable as petroleum itself. A major advantage of petroleum is that it can be easily transported in tankers. Cooking food in an open pan kept on low flame. Define minerals. Diamond is the hardest mineral found on the earth and is used for making cutting tools for cutting other gemstones. Iron and Bauxite can be found in Jharkhand, Odisha and Chhattisgarh. One of the best ways to revise the entire chapter is to browse through these CBSE Notes Class 8 Geography Chapter 3-Mineral and Power Resources that we have compiled in this article. (i) Name any three common minerals used by you every day. Class VIII: Chapter 3 (Mineral and Power Resources) Multiple Choice Question's. India is among the leading producers and exporters of salt. You can understand the properties of a silicate mineral such as crystal shape and cleavage by knowing which type of crystal lattice it has. Mineral classification schemes and their definitions are evolving to match recent advances in mineral science. Iron Ore (a) Soaking the dal for some time before cooking it. Ans. Hence most industries are concentrated around coal mines of the purpose saving cost of transportation of coal (cost effectiveness). is also generated from the energy of flowing water. They have a definite chemical composition. Differentiate between a rock and an ore. Q51. Video lecture, Q&A, summary, notes of ncert Geography Class 8 Chapter 3 minerals and power resources. In this section, we will look at the distribution of various minerals. Since citizens of the industrialized nations of Europe, Japan, and the United States have access to so many goods and services, that means they consume more of the world's resources (about 70%) and enjoy a higher standard of living and most of the world's wealth (about 80%). Metallic minerals are mostly found in igneous and metamorphic rocks like copper, nickel, platinum, chromites, and iron. Blasting done in the process of quarrying generate vibration which damage in the nearby buildings, dams or any other similar structure. (b) They have a definite chemical composition. s. ouTh. Distribution of Minerals Minerals are found in igneous, metamorphic and sedimentary rocks. (ii) Most industries are concentrated around coal mines. a. Merica. Asia produces more than 50% of the world’s tin. DISTRIBUTION OF MINERALS. is the heat energy stored inside the earth, can be seen dissipated on the earth’s surface in the form of hot springs, natural geysers and volcanoes, is also a renewable source of energy which is produced from biomass that includes wood from trees, matter from dead plants and animals, waste from other plants, animal dung and kitchen waste, can be used to generate electricity, light, heat, motion and fuel, is a low-cost source of energy, easy to operate, and uses bio-waste. Where are the ores of metallic minerals generally located? Biogas energy for rural areas, Hydel and tidal energy for coastal areas, Wind and solar energy for arid regions. The major coal producing countries in the world are China, the USA, Germany, Russia, South Africa, and France. Q50. Recent changes have included the addition of an organic class, in both the new Dana and the Strunz classification schemes. (a) Impure (b) Non-Renewable (c) Non-Exhaustible (d) Unevenly Distributed. (i) Environmental aspects must be carefully looked into before building huge dams. Ans: A naturally occurring substance that has a definite chemical composition is known as a mineral. About 80% of coal is mined from the Damodar Valley. Ans. d. Their distribution … Q47. During nuclear fission huge amount of heat and light energy is released. Other minerals like zinc, manganese, copper and fluoride are also required in very small amounts in our diet. Brazil produces high grade iron ore and is its largest producer in the world. China, Malaysia and Indonesia are among the leading … Among the world’s leading producers of tin are China, Malaysia and Indonesia followed by Brazil and Bolivia which are the largest producers of tin. Q2. Metallic minerals are mostly found in igneous and metamorphic rocks like copper, nickel, platinum, chromites and iron. Which one of the following properties of a mineral is not correct? Some are found in igneous rocks, some in metamorphic rocks while others occur in sedimentary rocks. Granite is widely used as building stone is one of the hardest rocks found in nature. Mineral based industries are the backbone of industrial development of a nation. Non-conventional sources of energy are renewable and unlimited in nature but are more expensive since they need technological upgradation. (iv) Which one of the following practices will NOT conserve LPG in your kitchen. For any material to be called ore of any mineral, it must contain minimum adequate quantity of that mineral so that it can be extracted profitably. Salt, Gold and Copper are three common minerals used everyday. Ans: The leading producers of petroleum in the world are Iran, Iraq, Saudi Arabia and Qatar. (a) They are created by natural processes. Chile and Peru are leading producers of copper. Iron-ore in … (ii) What is an ore? Thank you to everyone who completed our online mineral statistics questionnaire. Explore the many real-life applications of it. Ans. Quarrying can become a major environmental concern because of the following reasons:-, Your email address will not be published. The organic class includes a very rare group of minerals with hydrocarbons. Class - 8; Geography; Mineral and Power Resources; Distribution of Minerals; Distribution of Minerals Watch Distribution of Minerals explained in the form of a story in high quality animated videos. The species of this class of minerals are very rare. A variety of products like – kerosene, diesel, petrol, wax, plastics, lubricants etc. Mineral resources can be found in almost every aspect of our lives. (iii) Petroleum is referred to as “black gold”. Deccan and Chota Nagpur plateau in India provide a rich level of mineral distribution. Class 8 Geography Chapter 3 Mineral and Power Resources Ncert Textbook Questions Solved. Examples are limestone, mica, gypsum, coal and petroleum. Class VIII: Chapter 3 (Mineral and Power Resources) Question & Answers. (v) Give five ways in which you can save energy at home. Minerals are found in igneous, metamorphic and sedimentary rocks. Metallic minerals are mostly found in igneous and metamorphic rocks like copper, nickel, platinum, chromites and iron. are produced from these mineral resources. Non-metallic Minerals: They are limestone, nitrate, potash, mica, gypsum, coal, petroleum. NCERT Solutions for Class 8 Social Science, NCERT Solutions for class 8 Geography, Resources- Class 8th NCERT Solutions Geography, Chapter 2 - Land, Soil, Water, Natural Vegetation and Wildlife Resources - NCERT - Class 8 – Geography, NCERT Solutions for Class 8th: Ch 2 Land, Soil, Water, Natural Vegetation and Wildlife Resources Geography, Class VIII Geography Notes and study … The Kolar mines are among the deepest mines in the world. The lead chromate crocoite (PbCrO4) is isostructural with the sulfates of the barite group (BaSO4). Metallic minerals are usually found in igneous and metamorphic rock formations that form large plateaus. uneven distribution of mineral deposits around the world. arrow_back Use and Conservation of Minerals . Disadvantages of using coal as fuel are that it. Chapter 3 Mineral And Power . Gemstones are cut and polished first and then set into precious metals like gold, silver and platinum to make artistic jewellery. Cities / villages / towns may require shifting causing lot of hardships for the people. (c) Keeping the vegetables chopped before lighting the gas for cooking. All silicate minerals are built of silicon-oxygen tetrahedra (SiO4)4–in different bonding arrangements which create different crystal lattices. Mineral and Power Resources Class 8 Extra Questions and Answer Geography Chapter 3 Long Answers Type. CBSE Class 8 Important Questions Chapter 3 Geography. Your email address will not be published. Ans. Five ways in which energy can be saved at home: (i) Which one of the following is NOT a characteristic of minerals? Disclaimer | The energy derived from flowing water is called hydropower. Always remember that the concentration of mineral in the ore, the ease of extraction and closeness to the market play an important role in affecting the economic viability of a reserve. The leading producers of hydro power in the world are Paraguay, Norway, Brazil, and China. Rocks appear different in colour due to the minerals present in them. Minerals are also found in rocks and sea bed. References. Minerals are formed in different types of geological environments, under varying conditions such as evaporation of water, extreme heat and pressure. Q46. used to make jewellery, medallions and coins, Certain minerals are called gemstones and are. Online Test of Chapter – 3 Mineral and Power Resources Test 1 | Geography Class 8th Social Science (S.St) Q.1- Which one of the following is not a characteristic of minerals? Deforestation leads to environmental pollution. Distribution of Minerals. In South America there are deposits of gold, silver, zinc, chromium, manganese, bauxite, mica, platinum, asbestos and diamond. South Africa, Zimbabwe and Zaire produce a major part of gold in the world. Read the well-illustrated answers to score good marks in exams. Gold deposits can be found in Kolar mines in Karnataka which are one of the deepest mines in the world. It may destroy the humus of soil which is much required for the growth of plants and crops. Metals are hard substances that conduct heat and electricity and have lustre or shine. In sedimentary rocks, non-metallic minerals like limestone and phosphate and metallic minerals like manganese can be found. DISTRIBUTION OF MINERALS Minerals occur in different types of rocks. In nesosilicates, also called island silicates, the silicate tetrahedra are separate from ea… A naturally occurring substance that has a definite chemical composition is known as a ..... (a) Ore (b) Mineral (c) Soil (d) Land. What are the advantages and disadvantages of tidal energy? (iii) Which one of the following is a leading producer of copper in the world? Answer: A naturally occurring substance that has a definite chemical composition is a mineral. Ans. Geography Minerals and Power Resources class 8 Notes Geography in PDF are available for free download in myCBSEguide mobile app. Australia is the leading producer of gold, diamond, iron ore, tin and nickel and is the largest producer of bauxite. Based on the polyatomic anion, (SiO4)4–, which has a tetrahedral shape. c. They are inexhaustible. Minerals are mostly found in the form of ores and need to be extracted and purified before being used. Labour – unskilled to semi-skilled workforce for manual operations, skilled workforce for technical operations. Non-ferrous minerals: They contain metals other than iron. Jharkhand, Bihar, Andhra Pradesh are major mica producing states. Brazil and Bolivia are among the world’s largest . World’s largest producer of diamonds, gold and platinum is Africa. Environmental aspects must be carefully looked into before building huge dams because of the following reasons –. India is the leading producer of mica in the world. (iii) Name two regions rich in natural gas resources. ... DISTRIBUTION OF MINERALS • Minerals occur in different types of rocks. A summary of the feedbackthat BGS received is now available to view. 1. Asia: Iron ore deposits are found in China and India. myCBSEguide has just released Chapter Wise Question Answers for class 8 Social Science. Iron is present in every living cell and is essential for the production of haemoglobin, which is the primary component of red blood cells. is an inexhaustible and non-polluting form of energy, is the heat/light of Sun which is the primary source of all energy on the earth, Solar panel, made up of a number of solar cells that absorb solar energy and convert it into electricity, are used to convert solar energy into heat and electrical energy, can be effectively used in tropical countries that receive abundant sunlight, is renewable, low-cost, safe and clean source of energy, Wind mills are used to produce electricity, is the energy generated from tides which are caused by the gravitational pull of the moon and the sun and the rotation of the earth, is a non-polluting and inexhaustible source of energy, is the energy stored in the nuclei of radioactive elements like uranium and thorium, is produced during nuclear fission when the nucleus is split. 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