Q49. Energy from the sun, wind and tides, nuclear energy, energy from the earth and from decayed organic matter are called non-conventional sources of energy. SOUTH AMERICA Brazil is the largest producer of high grade iron-ore in the world. Minerals are also essential for all living beings. Minerals are found in igneous, metamorphic and sedimentary rocks. In India, the major coal producing areas are Raniganj, Jharia, Dhanbad and Bokaro in Jharkhand. 5. We hope the NCERT Solutions for Class 8 Social Science Geography Chapter 3 Mineral and Power Resources, help you. Minerals are used in many industries. The temperature in the interior of the earth rises steadily as we go deeper and some times this heat energy may surface itself in the form of hot springs. Major producing states in India are Bihar, Jharkhand, Odisha, M.P, Chattisgarh, Rajasthan, Gujarat and Tamil Nadu. Asia produces more than half of the world’s tin. China, Malaysia and Indonesia are among the world… Rocks … In South America there are deposits of gold, silver, zinc, chromium, manganese, bauxite, mica, platinum, asbestos and diamond. Manganese is a key component in the production of iron and steel. (i) Which of these is a non-metallic mineral? ... , availability of mineral and freshwater resources, favorable climate and soil fertility are some of the reasons affecting population distribution. is released when the crude oil is brought to the surface. Iron ore, nickel, copper minerals are found in igneous and metamorphic rocks. India is the largest producer and exporter of mica in the world. Mineral resources are the key material basis for socio-economic development. Silicon is obtained from quartz and Aluminium is obtained from its ore bauxite. Minerals can be identified on the basis of their physical properties and chemical properties. • Minerals used in various styles for jewellery. 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. Brazil produces high grade iron ore and is its largest producer in the world. If the planet Earth was a static system that had formed without any outside influences (planets, planetoids, asteroids, etc. Energy exists on our earth in several forms but saving energy rather than wasting it is more compulsory because the energy saved is the energy generated. Tropical regions are very rich in mineral resources. South Africa, Zimbabwe and Zaire produce a large portion of the world’s gold. Q4. Write a short note on distribution of minerals in Africa. The falling water flows through pipes inside the dam over turbine blades placed at the bottom of the dam and the moving blades then turn the generator to produce electricity. The major petroleum producing countries in the world are Iran, Iraq, Saudi Arabia and Qatar. The energy derived from flowing water is called hydropower. In sedimentary rocks, non-metallic minerals like limestone and phosphate and metallic minerals like manganese can be found. 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Diamond is the hardest mineral found on the earth and is used for making cutting tools for cutting other gemstones. Answer: Minerals are used in many industries. Other minerals like zinc, manganese, copper and fluoride are also required in very small amounts in our diet. Coal is referred to as buried sunshine because coal which is used today was formed millions of years ago when giant ferns and swamps got buried under the layers of earth. The reserve of these minerals are limited. Some areas are very crowded while some are sparsely populated. The hardness kits we use in class contain only minerals 27, as these are the most useful for testing - most of the minerals we will encounter in this class. Petroleum and its derivatives are called Black Gold because they are very valuable. Minerals are mostly extracted to isolate metals … NCERT Solutions for Class 8 Social Science Geography Mineral and Power Resources Chapter 3 are available in PDF format for free download. Then this is sent to refineries which process the crude oil and produce a variety of products. Skilled and semi skilled workers move to these areas and make them densely populated. Here we focus on the world-class Río Blanco PCD in the Andes of central Chile, where Ag is a by-product of Cu mining. Some gemstones like diamonds, sapphires, emeralds and rubies are rare and very expensive and are known as precious stones. Mineral and Power Resources Class 8 CBSE Notes Important Terms. Petroleum in its raw form is called crude oil which is drilled from oil fields located in off-shore and coastal areas. Metallic minerals are mostly found in igneous and metamorphic rocks like copper, nickel, platinum, chromites and iron. Geology of Antarctica is sufficiently well known to predict the existence of variety of mineral deposits, some probably large. Mineral fuels like coal and petroleum are also found in sedimentary rocks. Examples are limestone, mica, gypsum, coal and petroleum. Statistical results show that more than 95% of energy used by mankind, 80% industrial raw materials and 70% raw materials for agricultural production are from mineral resources. The distribution of population in the world is uneven. In India, geothermal plants are located in Manikaran in Himachal Pradesh and Puga Valley in Ladakh. These […] The fossil fuels are limited in stock and hence non-renewable so are important to be conserved. 1. Heat energy obtained from the earth is called geothermal energy. 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. A major advantage of petroleum is that it can be easily transported in tankers. Mica deposits mainly occur in Jharkhand, Bihar, Andhra Pradesh and Rajasthan. It is estimated that if the present rate of consumption continuous, the reserves of these fuel will get exhausted. The Kolar mines are among the deepest mines in the world. Power resources are broadly categorised as conventional and non-conventional resources. Minerals are also found in rocks and sea bed. The mineral fuels like coal and petroleum are also non-metallic minerals. Leading producer of iron ore in the world. Get a free home demo of LearnNext . Mainly produced in Rajasthan, Jharkhand, Madhya Pradesh, Karnataka and Andhra Pradesh. (iv) Metallic and non-metallic minerals. Chile and Peru are leading producers of Future developments in the regional distribution of mineral deposits 7. May contain other metals such as gold, silver, copper or lead. Distribution of Minerals. Minerals are also very essential for all living beings. Major bauxite producing areas are Jharkhand, Odisha, Chhattisgarh, Madhya Pradesh, Gujarat, Maharashtra and Tamil Nadu. Solar energy trapped from the sun can be used in solar cells to produce electricity. 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. Q50. Remains of plants and animals which were buried under the earth for millions of years got converted by the heat and pressure into fossil fuels. Very few countries of the world have sufficient natural gas reserves of their own. Europe is the leading producer of iron ore in the world. Preparing for IIT JEE or AIPMT or CA CPT, © Copyright Pivotal | You can also find Social Science Class 10 Important Questions With Answers Pdf from the year 2010 to 2020 CBSE board exams. Disadvantages of using coal as fuel are that it. The rate of formation is much smaller than that of its consumption. On extraction from the earth, these minerals are purified and isolated to produce the actual elements needed. Power resources are required for industrial and domestic use, agriculture, transport, communication and defence. Minerals deposits of copper, lead, zinc, manganese and nickel are found in eastern Europe and European Russia. Chile and Peru are leading producers of copper. These are … Describe the characteristics that all minerals share. This heat energy can be used to generate power. Question 1. The Ayers Rock in Western Australia is known to change colour every day and in every season depending on the light falling on it.. Explain with examples three economic factors influencing the population distribution in the world. Iron Ore. Iron ore is the basic mineral. Class-8CBSE Board - Distribution of Minerals - LearnNext offers animated video lessons with neatly explained examples, Study Material, FREE NCERT Solutions, Exercises and Tests. Non-conventional sources of energy are renewable and unlimited in nature but are more expensive since they need technological upgradation. Brazil and Bolivia are among the world’s largest producers of tin. Q59. It is the world’s largest producer of diamonds, gold and platinum. Q48. Limestone is found in sedimentary rocks. ), any surface action (wind, rain, rivers, oceans, etc.) (a) Minerals are present in impure form and it takes millions of year to form these minerals. Contact Us | The best app for CBSE students now provides Industries class 8 Notes Geography latest chapter wise notes for quick preparation … clear. Non-metallic Minerals: They are limestone, nitrate, potash, mica, gypsum, coal, petroleum. Ans. World Class Distribution Inc. is located in Fontana, CA, United States and is part of the Warehousing & Storage Industry. What are the uses of minerals? South America also has large deposits of gold silver, zinc, chromium, manganese, bauxite, mica, platinum, asbestos and diamond. Choose the correct option. Those used in gems are usually hard. The word petroleum means rock oil and is found between layers of rocks in the form of a thick black liquid. Asia produces more than 50% of the world’s tin. Aluminium is used for making automobiles and airplanes. Limestone, mica and gypsum are examples of such minerals. Key notes and summary of Class 8 NCERT Chapter 3 - Mineral and Power Resources. On the basis of composition, minerals are classified into, Most of the Iron and steel industries and heavy industries depends on this mineral, do not contain iron but may contain some other metals like gold, silver, copper or lead. Obtained from energy stored in the nucleic of atoms of naturally occurring radioactive elements like uranium and thorium. 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. USA has the world’s largest geothermal power plants. NCERT Solutions for Class 8 Geography SST Mineral and Power Resources NCERT Solutions for Class 8 Geography SST Mineral and Power Resources. There is need for using non-conventional sources such as solar energy, wind energy, tidal energy the energy which can be renewed. Ore: Rocks from which minerals are mined are known as ores. Mineral and Power Resources Class 8 Extra Questions and Answer Geography Chapter 3 Short Answers Type. Kalgoorlie and Coolgardie areas of western Australia have the largest deposits of gold. This document is highly rated by Class 8 students and has been viewed 12269 times. Iron is present in every living cell and is essential for the production of haemoglobin, which is the primary component of red blood cells. Minerals can be identified on the basis of their, physical properties such as colour, density, hardness. More than two-thousand minerals have been identified and most of these are inorganic, which are form… One-fourth of the world’s electricity is produced by hydel power. Answer: (i) Class 8 Geography Chapter 3 Mineral and Power Resources Exercise Questions. Mining needs cheap labour and resources to extract it off. What are the advantages and disadvantages of tidal energy? Example; Katanga Zambia copper belt in Africa. Mineral: a naturally occurring substance that has a definite chemical composition is a mineral. Question 1 Name any three common minerals used by you every day. Ans: The mineral deposits in North America are located in three zones: Write a short note on distribution of minerals in Europe. Here we present Minerals and Energy Resources Class 10 Important Questions and Answers Pdf Social Science Geography Chapter 5, We have collected all the important questions which came in the previous year exams. And the continent produces more than 50 % of the world ’ s largest of. 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