CBSE Class 7 Science Chapter 18 Notes Wastewater Story Forests: Our Lifeline Class 7 Notes Understanding the Lesson 1. Rich in lather, mixed with oil, black-brown water that goes down the drains from sinks, showers, toilets, laundries is dirty. This is called wastewater. 2. The suspended impurities in water are called contaminants. 3. The waste…
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CBSE Class 7 Science Chapter 17 Notes Forests: Our Lifeline Forests: Our Lifeline Class 7 Notes Understanding the Lesson 1. A large area of land covered mainly with trees and other plants is called a forest. 2. Forest is a system comprising various plants, animals and microorganisms. 3. The type of animals and kind of…
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CBSE Class 7 Science Chapter 16 Notes Water: A Precious Resource Water: A Precious Resource Class 7 Notes Understanding the Lesson 1. Water is the most important compound for all living things. There can be no life without it. 2. 22 March is celebrated as the world water day to attract the attention of everybody…
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CBSE Class 7 Science Chapter 15 Notes Light Light Class 7 Notes Understanding the Lesson 1. Light is a form of energy which enables us to see objects from which it comes or from which it is reflected. 2. The objects which emit light of their own are known as luminous objects, g., the sun,…
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CBSE Class 7 Science Chapter 14 Notes Electric Current and Its Effects Electric Current and Its Effects Class 7 Notes Understanding the Lesson 1. Electricity is an important source of energy in our day-to-day life. 2. An electric cell is a device which is used to generate electricity. 3. An electric cell has two terminals:…
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CBSE Class 7 Science Chapter 13 Notes Motion and Time Motion and Time Class 7 Notes Understanding the Lesson 1. The act or process of moving or of changing position or change of posture or a gesture is called motion. 2. Motion of objects are of two types-motion of some objects are slow while that…
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CBSE Class 7 Science Chapter 12 Notes Reproduction in Plants Reproduction in Plants Class 7 Notes Understanding the Lesson 1. The production of new individuals or young ones from their parents is known as 2. Most plants have roots, stems and These are called the vegetative parts of a plant. After a certain period of…
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CBSE Class 7 Science Chapter 11 Notes Transportation in Animals and Plants Transportation in Animals and Plants Class 7 Notes Understanding the Lesson 1. All organisms need food, water and oxygen for survival. 2. In human, circulatory system consists of the heart and blood vessels. 3. Blood is a fluid which transports various essential substances…
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CBSE Class 7 Science Chapter 10 Notes Respiration in Organisms Respiration in Organisms Class 7 Notes Understanding the Lesson 1. The breakdown of food in the cells with the release of energy is known as cellular respiration. 2. The cells of all organisms go through the cellular respiration. 3. Aerobic respiration is said to occur…
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CBSE Class 7 Science Chapter 9 Notes Soil Soil Class 7 Notes Understanding the Lesson 1. Soil is one of the most important natural resources for supporting life on the earth. 2. The rotting dead matter in the soil is called humus. 3. Soil is formed by breaking down of rocks by the action of…
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