Complete Explanation of CBSE Notes
Transportation in Animals and Plants Class 7 Science Notes – Chapter 11 The blood circulating in the body also distributes oxygen and food to different part/ cells of the body. Also, the waste products from various parts of the body are carried to the process of excretion. The human circulatory system comprises of blood vessels …
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Respiration in Organisms Class 7 Science Notes – Chapter 10 All living organisms breathe to survive. Respiration is necessary for survival. When we inhale oxygen, it breaks down glucose into water and carbon dioxide. This occurs in the cells of organisms. Therefore Energy is released from the food in the process. The breakdown occurs in …
Soil Class 7 Science Notes – Chapter 9 Soil plays an important role in the existence of life on earth. Soil profile can be defined as a section through various layers of soil. These various layers are known as horizons. The percolation rate of water differs from soil to soil. Different crops are cultivated in …
Winds, Storms and Cyclones Class 7 Science Notes – Chapter 8 Air is defined as an invisible substance which surrounds the earth in the gaseous form. It is mainly a mixture of nitrogen and oxygen. Wind is defined as the moving air. Air exerts pressure. On heating, air expands and occupies more space. Whereas on …
Weather, Climate and Adaptations of Animals to Climate Class 7 Science Notes – Chapter 7 Weather of a place is defined as the daily condition of the atmosphere of a particular place concerning humidity, wind-speed, temperature, rainfall, etc. It is different every day and week. The temperature is said to be at the maximum during …
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Physical and Chemical Changes Class 7 Science Notes – Chapter 6 Changes can be classified into two types viz physical change and chemical change. Physical change is a change in which the molecular arrangements are rearranged and the chemical composition remains as it is. It is usually a reversible process. During a physical change, there is …
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Acids, Bases and Salts Class 7 Science Notes – Chapter 5 Substances that taste sour in water solutions are called acids. For example, mineral acids, phosphoric acids, etc. Some properties of acids are as follows – They change the color of a few indicators. The blue litmus paper turns red They liberate hydrogen on reacting …
Heat Class 7 Science Notes – Chapter 4 Have you ever experienced feeling cold inside the house and warm in sun during winter? Also, feeling hot inside as well as outside the house in the summer season? To protect ourselves from the chilling cold we wear clothes made of wool. These woolen clothes are obtained …
Fibre to Fabric Class 7 Science Notes – Chapter 3 Some fibres are obtained from plants and some from animals. Fibres obtained from animals are silk and wool. Let us understand what type of fibres are got from which animals along with the process of extraction. Silk – These fibres are got from cocoons of …
Nutrition in Animals Class 7 Science Notes – Chapter 2 Animal nutrition can be defined as the nutrient requirement, the mode of food intake and how it is utilized in the body. The important digestive glands that secrete digestive juice viz liver, pancreas and salivary glands. The digestive system in human consists of secretory glands and alimentary …
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