Class 7 : Science Chapterwise Short Notes

Class 7 Science Full Syllabus

Class 7 Science : Index | कक्षा 7 विज्ञान : विषय-सूची Chapter English हिंदी 1 Nutrition in Plants पादपों में पोषण 2 Nutrition in Animals जंतुओं में पोषण 3 Heat ऊष्मा 4 Acids, Bases and Salts अम्ल, क्षार और लवण 5 Physical and Chemical Changes भौतिक एवं रासायनिक परिवर्तन 6 Respiration in Organisms जीवों में श्वसन 7 Transportation in Animals…

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Class 7 Science – Chapter 1: Nutrition in Plants

Chapter 1 : Nutrition in Plants हिन्दी में पढ़ें Introduction Types of Nutrition Photosynthesis: The Mode of Nutrition in Plants What is Photosynthesis? Equation for Photosynthesis Conditions Required for Photosynthesis Process of Photosynthesis Importance of Photosynthesis How Nutrients are Absorbed in Plants? Other Modes of Nutrition in Plants Some plants do not have chlorophyll and cannot prepare their own food.…

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Class 7 Science – Chapter 2: Nutrition in Animals

Class 7 Science – Chapter 2: Nutrition in Animals हिन्दी में पढ़ें Introduction Different Modes of Nutrition Animals have different modes of nutrition: Steps in Animal Nutrition 1. Ingestion 2. Digestion 3. Absorption 4. Assimilation 5. Egestion The Human Digestive System The human digestive system consists of the alimentary canal and digestive glands. Parts of the Digestive System Digestion in…

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Class 7 Science – Chapter 3: Heat NCERT Notes PDF

Chapter 3: Heat हिन्दी में पढ़ें Introduction Hot and Cold Objects Measuring Temperature Types of Thermometers Precautions While Using a Clinical Thermometer Transfer of Heat Heat transfer occurs in three ways: Sea Breeze and Land Breeze Conductors and Insulators Clothing and Heat Key Points to Remember Conclusion Heat is an essential form of energy affecting our daily lives. Understanding its…

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Class 7 Science – Chapter 4: Acids, Bases and Salts

Chapter 4: Acids, Bases, and Salts हिन्दी में पढ़ें Introduction Acids Definition Types of Acids Strong and Weak Acids Properties of Acids Bases Definition Types of Bases Natural and Synthetic Bases Properties of Bases Indicators Definition Types of Indicators Neutralization Reaction Definition Examples Salts Definition Types of Salts Properties of Salts Importance of Acids, Bases, and Salts in Daily Life…

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Class 7 Science – Chapter 5: Physical and Chemical Changes

Chapter 5: Physical and Chemical Changes हिन्दी में पढ़ें Changes occur everywhere in our surroundings. Some changes are temporary and can be reversed, while others are permanent and cannot be reversed. These changes are broadly classified into Physical Changes and Chemical Changes. Physical Changes A Physical Change is a change where: Examples: Characteristics of Physical Changes: Chemical Changes A Chemical…

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Class 7 Science – Chapter 6: Respiration in Organisms

Chapter 6: Respiration in Organisms हिन्दी में पढ़ें Introduction Respiration is a biological process in which food (glucose) is broken down to release energy. All living organisms need energy to perform various life processes, and this energy is obtained through respiration. Why Do We Respire? Types of Respiration Respiration is classified into two types: 1. Aerobic Respiration 2. Anaerobic Respiration…

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Class 7 Science – Chapter 7: Transportation in Animals and Plants

Chapter 7: Transportation in Animals and Plants हिन्दी में पढ़ें Transportation is an essential process in all living organisms. It involves the movement of nutrients, gases, and waste materials from one part of the body to another. In animals, the circulatory system plays a key role in transportation, while in plants, the vascular system (xylem and phloem) is responsible for…

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Class 7 Science – Chapter 8: Reproduction in Plants

Chapter 8: Reproduction in Plants हिन्दी में पढ़ें Introduction Reproduction is the biological process by which new individuals (offspring) are produced from their parents. In plants, reproduction ensures the continuation of species. It occurs in two main ways: Types of Reproduction in Plants 1. Asexual Reproduction In this type of reproduction, a single parent gives rise to offspring without the…

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Class 7 Science – Chapter 9: Motion and Time

Chapter 1 : Nutrition in Plants हिन्दी में पढ़ें 1. What is Motion? When an object changes its position over time, it is said to be in motion. Examples: 2. Types of Motion 3. What is Time? Time is a physical quantity that helps us measure the duration of events. Devices to Measure Time 4. Measurement of Motion (i) What…

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Class 7 Science – Chapter 10: Electric Current and its Effects

Chapter 10: Electric Current and its Effects हिन्दी में पढ़ें Introduction Electricity is a form of energy that is widely used in our daily lives. This chapter focuses on electric current, its effects, and how it is used in various devices. Electric Current Symbols of Electrical Components Electrical circuits are represented using symbols. Some common symbols are: Component Symbol Cell…

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Class 7 Science – Chapter 11: Light

Class 7 Science – Chapter 11: Light हिन्दी में पढ़ें Introduction Light is a form of energy that enables us to see objects. It travels in a straight line and allows us to perceive the world around us. This chapter explains the behavior of light, its reflection, and its interaction with different objects. Light and Its Importance Light is essential…

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Class 7 Science – Chapter 12: Forests: Our Lifeline

Chapter 12: Forests: Our Lifeline हिन्दी में पढ़ें Introduction Forests are an essential part of our environment. They provide us with oxygen, maintain the balance of nature, support biodiversity, and help in climate regulation. They act as the lifeline of Earth by playing a crucial role in sustaining life. Structure of a Forest A forest consists of different layers of…

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Class 7 Science – Chapter 13: Wastewater Story

Chapter 13: Wastewater Story हिन्दी में पढ़ें Introduction Water is essential for life, and its cleanliness is crucial for health. However, the water we use in homes, industries, and agriculture becomes wastewater after use. This wastewater contains harmful substances and needs to be treated before being released into the environment. What is Wastewater? Wastewater is the water that has been…

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