Light Class 7 Science Notes – Chapter 15 White light consists of seven colors. The path in which light travels is a straight line. A smooth or shinning surface that forms images by reflection of light is called a mirror. Types of images formed with mirrors – Real image – Images that can be obtained on the …
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Electric Current and Its Effects Class 7 Notes
Electric Current and its Effects Class 7 Science Notes – Chapter 14 Representation of electric components is very easy with the help of symbols. Drawing a circuit diagram is done conveniently with the help of these. Heating effect of the current is defined as, the heating of wire due to the flow of electric current through it. …
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Motion and Time Class 7 Notes
Motion and Time Class 7 Science Notes – Chapter 13 The basic unit to measure speed is meter per second. Time can be measured with periodic events such as a periodic motion of the pendulum. This is used in watches and clocks. We can represent motion in a pictorial form by the distance-time graph. When an object …
Reproduction in Plants Class 7 Notes
Reproduction in Plants Class 7 Science Notes – Chapter 12 All living organisms reproduce to multiply. The reproductive part of a plant is flower. It is either unisexual or bisexual. When a flower has only female reproductive parts or male reproductive parts, it is said to be a unisexual flower. When a flower has both …
Transportation in Animals and Plants Class 7 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 Notes
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 Notes
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 Notes
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 Notes
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 Notes
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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