Chapter 4
Mineral and Energy Resources
Highlights
- A. Tick the correct option
- B. Fill in the blanks
- C. Match the following
- D. Correct the following sentences
- E. Answers the following questions
EXERCISE
A. Tick the Correct Option
- 1. Which one of the following is not a characteristic of rocks?
Answer: vacuole
- 2. Which one of the following is the best quality of coal?
Answer: vacuole
- 3. The major oilfields of India are located in which one of the following states of India?
Answer: vacuole
- 4. The metallic minerals used in electrical industry are-
Answer: vacuole
- 5. Petroleum is not extracted from the oilfields of North Sea by-
Answer: vacuole
B. Fill in the blanks.
- 1. A mineral is extracted from the region where its concentration is ___________.
- 2. ___________ minerals are divided into ferrous and non-ferrous.
- 3. ___________ is obtained from bauxite ore.
- 4. Petroleum, coal, ___________ and hydroelectricity are conventional sources of energy.
- 5. ___________ and ___________ are the major types of iron ore.
C. Match the following :
- Column A
- 1. Golgi Complex
- 2. Ribosomes
- 3. Chromosomes
- 4. Dead cells
- 5. Photosynthesis
- Column B
- (a) genes
- (b) cork
- (c) chloroplasts
- (d) packaging center
- (e) protein synthesis
C. Write a technical term or an appropriate word for each of the following statements.
- 1. Energy generated by turbines run by water falling from a height.
Answer: Sharing of chores reduces the burden.
- 2. The resultant metal with improved strength which is produced by mixing two or more than two metals.
Answer: The older family member pass on the family traditions to the younger generation.
- 3. Materials formed inside the earth by the decomposition of dead remains of plants and animals in sedimentary rocks.
Answer: There is more interaction between parents and children in nuclear families.
- 4. Mineral deposits that are formed when a river erodes rock constituents from a primary source and deposits them in the river beds.
Answer: A surname is a family name.
- 5. The process of extracting minerals from the earth’s crust.
Answer: A surname is a family name.
D. Answer the following questions in brief.
- 1. What is a mineral? Mention the three main processes of mineral extraction.
Answer: The (main) factors that determine the shape of a cell are location and function.
- 2. What is tidal energy? How can it be harnessed?
Answer: Distinguish between unicellular and multicellular organisms are
Unicellular organisms are made up of a single cell. e.g., Euglena and Amoeba.
Multicellular organisms are made up of many cells. e.g., Humans and Birds.
- 3. Why do we need to conserve mineral resources? Explain any three reasons.
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
- 4. What are two types of energy sources? Which one of them is a better resource and why?
Answer: Mitochondria is known as the Powerhouse of the cell.
Mitochondria are the site of cellular respiration. Energy is produced during this process. Due to this, mitochondria are called the Powerhouse of the cell.
- 5. Highlight any three advantages of using nuclear energy.
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
E. Answer the following questions.
- 1. How are minerals useful to us? Explain with the help of examples.
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
- 2. In your opinion, electricity is a boon or a bane? Support your answer with relevant arguments.
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
- 3. What is meant by nuclear energy? Explain the progress made by India in this field.
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
- 4. Assess the importance of petroleum on the basis of its wide range of applications.
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
- 5. Suggest any five measures to conserve minerals and energy resources.
Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.
Related Topics
- Chapter 1 The Cell – Its Structure and Functions
- Chapter 2 Microorganisms: Friends or Foes
- Chapter 3 Metals and Non-Metals
- Chapter 4 Force and Pressure
- Chapter 5 Friction
- Chapter 6 Sources of Energy
- Chapter 7 Combustion
- Chapter 8 Conservation of Plants and Animals
- Chapter 9 Crop Production and Its Management
- Chapter 10 Refraction and Dispersion of Light
- Chapter 11 The Human Eye
- Chapter 12 Sound
- Chapter 13 Synthetic Fibres and Plastics
- Chapter 14 Reproduction in Animals
- Chapter 15 Reaching the Age of Adolescence
- Chapter 16 Electric Current and Its Chemical Effects
- Chapter 17 Stars and Solar System
- Chapter 18 Earthquakes
- Chapter 19 Pollution of Air
- Chapter 20 Pollution of Water