Science Class 8 Solutions, MCQ, Notes, Book FREE PDF Download

Chapter 1 Crop Production and Management Chapter 2 Microorganisms: Friend and Foe Chapter 3 Coal and Petroleum Chapter 4 Combustion and Flame Chapter 5 Conservation of Plants and Animals Chapter 6 Reproduction in Animals Chapter 7 Reaching the Age of Adolescence Chapter 8 Force and Pressure Chapter 9 Friction Chapter 10 Sound Chapter 11 Chemical […]

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How Nature Works in Harmony 1. Introduction In many Indian states like Odisha, Jharkhand, West Bengal, Assam, and Chhattisgarh, elephants enter farms due to loss of forests and water. This happens because of: 1. Cutting trees 2. Less rainfall 3. Drying waterholes Elephants look for food like bananas and sugarcane. Elephant corridors are created to […]

Keeping Time with the Skies Introduction This chapter explains how the Moon, Sun, and stars help us measure time. It covers why the Moon’s appearance changes, how calendars are created, and why festivals occur on different dates. It also discusses artificial satellites and their uses. 1. Why Does the Moon Look Different? Observation: Meera saw […]

Light: Mirrors and Lenses Introduction Light helps us see things around us. Mirrors and lenses change how we see objects by reflecting or bending light. This chapter explains how plane mirrors, spherical mirrors (concave and convex), and lenses (convex and concave) work. 1. Types of Mirrors Mirrors reflect light to form images. There are three […]

The Amazing World of Solutes, Solvents, and Solutions 1. Mixtures 1. Uniform Mixtures: Components evenly distributed (e.g., sugar/salt in water, ORS). 2. Non-Uniform Mixtures: Components not evenly distributed (e.g., chalk, sand, or sawdust in water). 2. Solutions 1. Solution: Uniform mixture of solute (dissolved substance) and solvent (dissolving medium). Example: Sugar (solute) + Water (solvent) […]

Nature of Matter: Elements, Compounds, and Mixtures What is Matter? Everything around us like air, water, food, books, clothes, etc., is matter. Matter is made up of tiny particles. Many things around us are not pure substances but mixtures. 8.1 What Are Mixtures? A mixture is made by mixing two or more substances where each […]

Particulate Nature of Matter 1. What is Matter Made Of? Matter is made up of very small particles. These particles are called constituent particles. These cannot be seen with the naked eye or even an ordinary microscope. Example: Chalk powder is made of tiny particles of chalk. Activities: Grinding chalk only breaks it into smaller […]

Pressure, Winds, Storms, and Cyclones 1. What is Pressure? – Pressure is the force applied on a unit area. Formula: Pressure=Force/Area Pressure=AreaForce​ SI Unit of Pressure = Pascal (Pa) or N/m² Examples: A bag with broad straps feels comfortable because the weight is spread over a large area → less pressure. Narrow straps give more […]