Official Board Curriculum & Visual Learning Roadmap

CBSE Class 8 Science Syllabus

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CHAPTER 17 Key Concepts

Crop Production and Management

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Agricultural practices, modern irrigation, fertilization, and storage.

Syllabus Key Topics & Derivations (7):

Kharif vs Rabi Crops: Seasonal Differences

Preparation of Soil: Ploughing, Levelling, and Manuring

Sowing Seeds and Traditional vs Modern Seed Drills

Adding Manure and Fertilizers (Organic vs Chemical)

CHAPTER 25 Key Concepts

Microorganisms: Friend and Foe

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Beneficial and pathogenic microbes, food preservation, and nitrogen cycle.

Syllabus Key Topics & Derivations (5):

Major Groups of Microorganisms: Bacteria, Fungi, Protozoa, and Algae

Commercial and Medicinal Uses: Fermentation, Antibiotics, and Vaccines

Harmful Microorganisms: Pathogens in Humans, Animals, and Plants

Food Preservation Methods (Chemical, Salting, Sugar, Pasteurization)

CHAPTER 35 Key Concepts

Coal and Petroleum

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Fossil fuels, fractional distillation of petroleum, and conservation.

Syllabus Key Topics & Derivations (5):

Exhaustible vs Inexhaustible Natural Resources

Formation and Processing of Coal (Coke, Coal Tar, Coal Gas)

Origin and Refining of Petroleum (Fractions and Their Uses)

Compressed Natural Gas (CNG) and Petrochemicals

CHAPTER 45 Key Concepts

Combustion and Flame

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Combustion conditions, ignition temperature, flame structure, and fuels.

Syllabus Key Topics & Derivations (5):

What is Combustion: Fuel, Oxygen, and Ignition Temperature

Inflammable Substances and Fire Safety (Fire Extinguishers)

Types of Combustion: Rapid, Spontaneous, and Explosion

Structure of a Flame (Outer, Middle, and Inner Zones)

CHAPTER 55 Key Concepts

Conservation of Plants and Animals

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Deforestation, biodiversity conservation, biosphere reserves, and Red Data Book.

Syllabus Key Topics & Derivations (5):

Deforestation: Causes and Consequences (Desertification & Global Warming)

Biosphere Reserves, National Parks, and Wildlife Sanctuaries

Flora and Fauna: Endemic and Threatened Species

Red Data Book and Wildlife Protection Acts

CHAPTER 66 Key Concepts

Reproduction in Animals

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Modes of reproduction, human reproductive system, fertilization, and cloning.

Syllabus Key Topics & Derivations (6):

Sexual vs Asexual Reproduction Modes

Male and Female Human Reproductive Systems

Fertilization: Internal vs External Fertilization

Development of Embryo, Viviparous and Oviparous Animals

CHAPTER 76 Key Concepts

Reaching the Age of Adolescence

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Puberty changes, hormones, endocrine glands, and reproductive health.

Syllabus Key Topics & Derivations (6):

Adolescence and Puberty: Physical and Emotional Changes

Secondary Sexual Characteristics and Adam's Apple

Hormones in Initiating Reproductive Function (Pituitary, Testosterone, Estrogen)

Reproductive Phase of Life in Humans (Menstruation and Menopause)

CHAPTER 86 Key Concepts

Force and Pressure

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Types of forces, pressure, and fluid/atmospheric pressure.

Syllabus Key Topics & Derivations (6):

Force: Push, Pull, Magnitude, and Direction

Contact Forces: Muscular Force and Friction

Non-Contact Forces: Magnetic, Electrostatic, and Gravitational Forces

Pressure: Force Per Unit Area (P = F / A)

CHAPTER 95 Key Concepts

Friction

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Causes of friction, types of friction, advantages, and reduction.

Syllabus Key Topics & Derivations (5):

Causes of Friction: Microscopic Irregularities and Interlocking

Static, Sliding, and Rolling Friction (Comparison of Magnitudes)

Friction: A Necessary Evil (Walking, Braking, Machinery Wear)

Increasing and Reducing Friction (Lubricants, Ball Bearings, Streamlined Shapes)

CHAPTER 106 Key Concepts

Sound

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Sound generation, propagation, human ear, pitch, and amplitude.

Syllabus Key Topics & Derivations (6):

Production of Sound by Vibrating Bodies (Vocal Cords, Tuning Fork)

Sound Propagation Requires a Material Medium (Vacuum Cannot Transmit Sound)

Amplitude, Time Period, and Frequency of a Vibration

Loudness (dB) vs Pitch (Frequency / Shrillness)

CHAPTER 114 Key Concepts

Chemical Effects of Electric Current

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Conductors, insulators, electrolytes, chemical effects, and electroplating.

Syllabus Key Topics & Derivations (4):

Electrical Conductivity of Liquids (Acids, Bases, Salts)

LED Testers for Weak Currents

Chemical Effects of Electric Current (Bubbles, Color Change, Deposits)

Electroplating: Process, Setup, and Industrial Applications (Chrome, Gold, Zinc)

CHAPTER 125 Key Concepts

Some Natural Phenomena

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Static charges, lightning, earthquakes, and safety precautions.

Syllabus Key Topics & Derivations (5):

Charging by Rubbing: Positive and Negative Charges

Types of Charges and Their Interaction (Like Repel, Unlike Attract)

The Electroscope: Detecting Electric Charge

The Story of Lightning and Lightning Conductors

CHAPTER 137 Key Concepts

Light

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Laws of reflection, plane mirrors, human eye structure, and care.

Syllabus Key Topics & Derivations (7):

What Makes Things Visible: Reflection of Light

Laws of Reflection (Angle of Incidence = Angle of Reflection)

Regular vs Diffused Reflection

Reflected Light Can Be Reflected Again (Periscope, Kaleidoscope)

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