CBSE Syllabus For Class 8 Science: Knowing the Syllabus is very important for the students of Class 8. Shaalaa has also provided a list of topics that every student needs to understand.
The CBSE Class 8 Science syllabus for the academic year 2022-2023 is based on the Board's guidelines. Students should read the Class 8 Science Syllabus to learn about the subject's subjects and subtopics.
Students will discover the unit names, chapters under each unit, and subtopics under each chapter in the CBSE Class 8 Science Syllabus pdf 2022-2023. They will also receive a complete practical syllabus for Class 8 Science in addition to this.
Academic year:
CBSE Class 8 Science Revised Syllabus
CBSE Class 8 Science and their Unit wise marks distribution
CBSE Class 8 Science Course Structure 2022-2023 With Marking Scheme
Syllabus
1 Crop Production and Management
- Crop and Its Types
- Basic Practices of Crop Production
- Soil Formation and Preparation for Agriculture
- Agricultural Implements
- Sowing and Selection of Seed
- Manuring (Biomanuring)
- Fertilizers
- Methods to Replenish Nutrients in Your Soil
- Irrigation
- Method of Irrigation
- Weeding
- Harvesting of Crops
- Storage of Food Grains
- Animal Products used as Food
2 Microorganisms: Friend and Foe
- Microorganisms (Microbes) and Microbiology
- Where Do Microorganisms Live?
- Uses of Microorganisms (Microbes)
- Dairy Products
- Yoghurt Products
- Butter
- Cheese production
- Probiotics
- Bread
- Vinegar Production
- Production of beverages
- Microbial Enzymes
- Organic acids used in various commercial products and microbes useful for the same
- Substances obtained by microbial processing and their roles
- Antibiotics
- Microbes and Fuels
- Bio-fuel
- Microbial Pollution Control
- Land-filling site
- Sewage Management
- Clean Technology
- Microbes and Farming
- Microbial Inoculants
- Bioinsecticides
- Harmful Effects of Microorganisms (Microbes)
- Fungi, Clostridium and others
- Preservation of Food
- Methods of Food Preservation
- Nitrogen Fixation
- Biogeochemical Cycle
- Nitrogen Cycle
- Nitrogen fixation
- Nitrogen assimilation
- Ammonification
- Nitrification
- Denitrification
- Human impacts on the nitrogen cycle
- Nitrogen Cycle
3 Synthetic Fibres and Plastics
4 Materials: Metals and Non-metals
- Material and Its Properties
- Classification of Material
- Types of Elements: Metals
- Metals
- Occurrence of metal
- Uses of Metals
- Physical Properties of Metals
- Chemical Properties of Metal
- Types of Elements: Non-metal
- Non-metals
- Occurrence of non-metal
- Uses of Non-metals
- Physical Properties of Non-metal
- Chemical Properties of Non-metal
5 Coal and Petroleum
- Conventional Sources of Energy and Non-conventional Sources of Energy
- Conventional Sources of Energy (Inexhaustible Natural Resources)
- Non-Conventional Sources of Energy (Exhaustible Natural Resources)
- Difference between Conventional Sources of Energy and Non-Conventional Sources of Energy
- Carbon: a Versatile Element
- Carbon
- Versatile nature of Carbon
- Occurrence of carbon
- Special Features of Carbon
- Catenation
- Tetravalency
- Multiple Bonds
- Isomerism
- Allotropy
- Crystalline forms of Carbon
- Non-crystalline / Amorphous forms
- Non-crystalline/Amorphous Forms: Coal
- Extraction of Coal
- Non-crystalline/Amorphous Forms: Cock
- Petroleum
- Refining of Crude Petroleum
- Natural Gas
- Some Natural Resources Are Limited
6 Combustion and Flame
7 Conservation of Plants and Animals
- Deforestation and Its Causes
- Deforestation
- Causes of deforestation: Jhum cultivation
- Consequences of Deforestation
- Conservation of Forest
- Conservation of Wildlife
- In-situ conservation
- National Parks
- Wildlife sanctuaries
- Biosphere reserves
- Advantages of In-situ conservation
- Ex-situ Conservation
- Botanical gardens
- Zoological parks
- Tissue Culture
- Seed bank
- Cryo Bank
- Advantages of Ex-situ conservation
- Biosphere Reserve
- Nilgiri Biosphere Reserve
- Nanda Devi Biosphere Reserve
- Sunderbans Biosphere Reserve
- Gulf of Mannar Biosphere Reserve
- Flora and Fauna of Forest Ecosystem
- Endemic Species
- Wildlife Sanctuary
- National Park
- Red Data Book
- Migration
- Recycling of Paper
- Reforestation
8 Cell - Structure and Functions
- Cell: the Fundamental Unit of Life
- Cell
- Totipotency
- Experiment: Microscopic examination of onion peel.
- The Invention of the Microscope and the Discovery of Cell
- Organisms Show Variety in Cell Number, Shape and Size
- Cell Numbers
- Cell Size
- Smallness of cells: A Greater Efficiency
- Cell Shapes: To suit Functional Requirement
- Structure of a Cell
- Structure of a Cell
- Organ and Organelle
- Nucleus - “Brain” of the Cell
- Nuclear Membrane
- Nucleoli
- Nucleoplasm
- Chromatin fibres
- Experiment: An experiment on amoeba to show that the nucleus is essential for a normal life.
- Plastids
- Plastids
- Leucoplasts
- Chromoplasts
- Chloroplast - “Food Producers”
- Non-living Substances Or Cell Inclusion
- Granules
- Vacuoles
- Prokaryotic and Eukaryotic Cell
- Plant Cell and Animal Cell
9 Reproduction in Animal
- Reproduction in Plant
- Reproduction in Animal and Human
- Mode of Reproduction in Animal
- Mode of Reproduction in Animal:
- Sexual reproduction
- Asexual reproduction
- Asexual Reproduction
- Asexual Reproduction in Plant
- Asexual reproduction in plant
- Types of asexual reproduction in plant
- Asexual Reproduction in Plant
- Sexual Reproduction in Animals
- Why the Sexual Mode of Reproduction?
- Human Reproductive System
- The Male Reproductive System
- The male reproductive system
- Testes
- Accessory ducts
- Accessory glands
- External genitalia
- Histology of seminiferous tubules
- The Female Reproductive System
- Female Reproductive System
- Ovaries
- Accessory ducts
- External genitalia
- Accessory glands
- Mammary glands
- The Male Reproductive System
- Gametogenesis
- Gametogenesis
- Spermatogenesis
- Structure of human spermatozoan
- Oogenesis
- Structure of ovum
- Fertilization in Human
- Fertilization
- Mechanism of fertilization
- Effect of fertilization
- Significance of fertilization
- Sex determination
- Embryonic Development in Human
- Cleavage
- Blastulation
- Implantation
- Gastrulation
- Embryo Formation in Viviparous and Oviparous Animals - Young Ones to Adults
10 Reaching the Age of Adolescence
- Adolescence and Puberty
- Changes at Puberty
- Secondary Sex Characteristics
- Role of Hormones in Initiating Reproductive Function
- Reproductive Phase of Life in Humans
- Sex Determination
- Hormones Other than Sex Hormones
- Role of Hormones in Completing the Life History of Insects and Frogs
- Reproductive Health
- Family Welfare Programme
- Reproductive and Child Health Care (RCH) Programme
- Goals of RCH Programmes
- Nutritional Needs of Adolescents
- Personal Hygiene for Adolescence
11 Force and Pressure
- Force
- Force - Push or Pull
- Forces Are Due to an Interaction
- Exploring Forces
- A Force Can Change the State of Motion
- Force Can Change the Shape of an Object
- Effect of Force
- A Force can change the State of motion
- Force can change the shape of an object
- Stops or tries to stop a moving body
- Changes or tries to change the direction of motion of a moving body
- Like parallel forces effect
- Unbalanced forces effect
- Unlike parallel forces effect
- Types of Force: Contact Force
- Types of Contact Force
- Frictional Force
- Normal reaction Force
- Spring Force
- Applied Force (Muscular force)
- Tension Force
- Air Resistance Force
- Mechanical force
- Force exerted during collision
- Types of Force: Non-Contact Force
- The general character of non-contact force
- Types of Force: Non-Contact Force
- Magnetic Force
- Electrostatic Force
- Gravitational Force
- Nuclear Force
- Balance Force
- Unbalance Force
- Thrust and Pressure
- Thrust
- Unit of thrust
- Example of thrust
- Pressure
- Unit of Pressure
- Examples of Pressure in our daily life
- Liquid Pressure
- Liquid Pressure
- Experiment of pressure on fluid
- Factors Affecting Liquid Pressure
- Atmospheric Pressure
- Atmospheric Pressure
- Demonstration of Atmospheric Pressure
12 Friction
13 Sound
- Sound
- Sound
- Types of Sound
- Longitudinal wave
- Transverse wave
- Categories of sound waves based on their frequencies
- Audible waves
- Infrasonic waves
- Ultrasonic waves
- Production of Sound
- Experiment: A vibrating string produces sound.
- Experiment: A vibrating tuning fork produces sound.
- Musical Instruments
- Sound Produced by Humans
- Propagation of Sound
- Sound Need a Medium to Travel
- Experiment: Bell-Jar experiment
- Human Ear
- Structure of Human Ear
- Mechanism of Human ear
- Characteristics of a Sound Wave
- Frequency
- Amplitude (A)
- Time period (T)
- Wavelength (λ)
- Wave velocity
- Pitch
- Oscillator, Oscillation and Oscillatory Motion
- Properties of Sounds
- Loudness and Intensity
- Loudness
- Intensity
- Subjective nature of loudness and objective nature of intensity
- Factors affecting the loudness of sound
- Relationship between loudness and intensity
- Pitch (or shrillness) and frequency
- Pitch (or shrillness)
- Examples of change in pitch
- Subjective nature of pitch and objective nature of frequency
- Audibility and Range
- Audibility and Range
- Audible sound
- Infrasonic sound
- Ultrasonic sound
- Loudness and Intensity
- Noise and Music
- Noise Pollution
- Noise Pollution
- Health hazards due to noise pollution
14 Chemical Effects of Electric Current
- Electricity
- Conductors and Insulators
- Conductors
- Insulators (Non-Conductors)
- Conductor of Electricity: Liquid
- Effects of Electric Current
- Chemical Effects of Electric Current
- Chemical effect of electric current
- Application of Chemical effect of electric current
- Electroplating
- Chemical Effects of Electric Current
15 Some Natural Phenomena
- Force of Friction
- Electric Charges
- Charge
- Unit of charge
- Electric charges
- What is the origin of an electric charge?
- Measuring electric charge
- Types of Charges and Their Interaction
- Transfer of Charge
- Electroscope
- Lightning and Lightning Safety
- Earthquake
- Focus and Epicenter
- Types of seismic waves
1. Primary or ‘P’ waves
2. Secondary or ‘S’ waves
3. Surface or ‘L’ waves
- Protection Against Earthquakes
16 Light
- Light
- Reflection of Light
- Reflection of Light
- How do we see an object?
- Terms Used in Reflection of Light
- Terms used in reflection of light
- Is there any relationship between the incident ray and the reflected ray?
- Incident ray
- Point of incidence
- Reflected ray
- Normal
- Angle of incidence
- Angle of reflection
- Angle of deviation
- Plane of incidence
- Plane of reflection
- Glancing angle
- Law of Reflection of Light
- Types of Reflection
- Types of Reflection
- Regular reflection
- Irregular reflection
- Multiple Reflections
- Concept of Prism
- Dispersion of Light Through Prism and Formation of Spectrum
- Dispersion Of Light through Prism
- Newton's Experiment
- Formation of Rainbow
- Newton Disc
- Spectrum
- Cause of dispersion of white light and formation of spectrum
- Angular dispersion (Δ)
- Dispersive power (ω)
- Dispersion without deviation
- Deviation without dispersion
- Human Eye: Structure of the Eye
- The eyes - Photoreceptor: Rod cell and cone cell
- External structure of an Eye
- Sclera
- Conjunctiva
- Cornea
- Iris
- Pupil
- The internal structure of an Eye
- Lens
- Retina
- Optic nerve
- Aqueous Humour
- Vitreous Humour
- Care of the Eyes
- Visual Impairment and Braille System
17 Star and Solar System
- Sky Watching
- Moon and Its Phases
- Stars and Its Types
- Constellation
- The Solar System
- Other Bodies of the Solar System
- Satellites
- Dwarf planets
- Asteroids
- A comet
- A meteor
18 Pollution of Air and Water
- Pollution and Its Types
- Pollution
- Pollutant
- Types of pollution
- Air Pollution and Its Causes
- Air Pollution
- Causes of Air pollution
- Sources of Air Pollution
- Case Study: The Taj Mahal
- Green House Effect
- Green House Effect
- Green House gases
- Preventive Measures of Green House Effect
- Global Warming
- Global Warming
- Causes of Global warming
- Effect of Global Warming
- Preventive Measures of Global Warming
- Prevention of Air Pollution
- Measures to control air pollution
- Devices to control air pollution
- Electrostatic precipitator (ESP)
- Scrubbers
- Catalytic converters
- Water Pollution and Its Causes
- Water Pollution
- Causes of Water Pollution
- Sources of Water Pollution
- Case Study: Ganga Pollution and Ganga Action Plan
- Potable Water
- Purification of Water
- Prevention of Water Pollution
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