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Chapter 14 – Natural Resources

Easy & Detailed Notes 1. What Are Natural Resources? All materials available in nature used by humans are natural resources.Examples: Air, Water, Soil, Forests, Wildlife, Minerals, etc. 2. Types of Natural…

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Chapter 15 – Improvement in Food Resources

1. Why Improvement in Food Resources? To increase food production for growing population Improve quality & quantity of food Reduce losses from pests, diseases, and poor soil 2. Types of Crops TypeGrown InExampleKharifJune–Oct (Monsoon)Rice, maizeRabiNov–April (Winter)Wheat, mustard…

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Chapter 16 – Our Environment

Easy Notes All living organisms (biotic) and non-living things (abiotic) in an area = Ecosystem Examples: Forest, pond, aquarium 2. Components of Ecosystem BioticAbioticPlants, animals, humans, microbesSoil, water, air, light 3.…

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Chapter 10 – Gravitation

1. What is Gravitation? Gravitation is the force of attraction between two objects in the universe. It acts even without contact. 2. Universal Law of Gravitation “Every object in the…

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Chapter 9 – Force and Laws of Motion

Detailed & Easy Notes 1. Force A push or pull acting on an object. It can change: Shape Speed Direction of motion 2. Types of Force Balanced Force: No motion/change in motion…

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Chapter 8 – Motion

Easy Notes 1. What is Motion? When the position of an object changes with time, it is said to be in motion. Types of motion: Rectilinear (straight line), Circular, Periodic.…

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Chapter 7 – Diversity in Living Organisms

Easy Easy Notes 1. What is Biodiversity? Variety of living organisms on Earth. India is rich in biodiversity. 2. Need for Classification To study organisms easily. To understand similarities and…

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Chapter 6 – Tissues

Easy & Notes 1. What is Tissue? Group of similar cells that perform a specific function. Cells in tissues work together. Tissue → Organ → Organ System → Organism 2. Types of Tissues…

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Chapter 5: The Fundamental Unit of Life

Easy & Expanded Notes 1. Discovery of Cell Cell was discovered by Robert Hooke in 1665 while observing cork. Anton van Leeuwenhoek observed living cells. “Cell” means small room in Latin. 2. Cell Theory Proposed…

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Chapter 4: Structure of the Atom

1. Discovery of Subatomic Particles Electron discovered by J.J. Thomson (1897) Proton discovered by Goldstein Neutron discovered by James Chadwick 2. Subatomic Particles Summary ParticleChargeMass (approx.)SymbolElectron-11/1836 ue⁻Proton+11 up⁺Neutron0 (Neutral)1 un⁰ 3. Atomic Models a) Thomson’s Model (“Plum Pudding”) Atom = Positive…

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