science

This subject covers units such as chemistry, physics and, biology

Physics covers chapters such as Sound, Motion, Gravitation, Laws of Motion, Work and Energy, Reflection of Light at Curved Surfaces, Floating Bodies and, Units and Graphs

Physics

Chemistry covers chapters such as Chemical Reaction and Equations, Atoms and Molecules, What is Inside Atom and, Is Matter Pure

Chemistry

Biology covers chapters such as Sense Organs, Soil Pollution, Plasma Membrane, Biogeochemical Cycles, Animal Tissues, Plant Tissues, Animal Behaviour, Diversity in Living Organism and, Cell: Its Structure and Functions

Biology

BIOLOGY Class 9

Physical Science Class 9

SCIENCE TEXTBOOK FOR CLASS IX

Endocytosis and Exocytosis Across the Cell

Classification of Animals

Adaptive Radiation

Weight of an Object on Moon

Deforestation

Valencies of Some Common Ions

The Relationship Between Classification and Evolution

Law of Multiple Proportions

The Contrasting Worlds of Monera and Fungi

Meristematic Tissues

Centre of Mass and Centre of Gravity

Range of Mass

Law of Conservation of Mass

Average Velocity

Chemical Reactions: Their Significance and Representation

Biomagnification and Bioaccumulation

Classification of Waves

Conservation of Mechanical Energy

Distance vs Displacement

Introduction to Units

Bohr's Atomic Model

The Ear

The Eye

Sensory Reception and Processing

Anatomy of the Bone

Adipose Tissue

Areolar Connective Tissues

Epithelial Tissue

Solar Cookers

General Terms Related to Spherical Mirrors

Types of Chemical Reactions

Spoiling the Soil

Constituents of the Soil

What Makes the Soil?

What Makes Water a Wonder Liquid?

The Oxygen Cycle

Study of Infrasound and Ultrasound in Waves

Sound Propagation

Density of Substances

A Formal Proof of Archimedes' Principle

Archimedes’ Principle: Statement and Applications

Equations of Motion Using Graphs

Uniform and Non-uniform Motion on Graphs

More on Speed and Velocity

Yeast and Fungi

Protozoans

Diatoms

Microbial Rule: Kingdom Monera

Rule of Binomial Nomenclature

Classification of Eukaryotic Organisms

Muscular and Nervous Tissue

Connective Tissues

Complex Tissues (Xylem and Phloem)

Simple Permanent Tissue: Parenchyma

Plant Cells, Osmosis and Plasmolysis

Cell Organelles: ER and the Golgi Body

Origin of Atomic Number and Mass Number

Rutherford's Model of an Atom and Its Drawback

The Mole Concept

Molecules of Elements and Compounds

What Are Compounds?

Atomic Mass, Molecular Mass and Formula Unit Mass

Atoms, Molecules and Ions

Separation of Dyes in Black Ink by Chromatography

Simple Distillation

Properties of Colloids

Suspensions and Their Properties

Mixtures

Features of the Animal Cell

Nucleus and Lysosomes

Cellular Anatomy of Plant Cell

Nitrogen Cycle

Pesticides and Weedicides

Crop Production and Crop Improvement

Soil Erosion - Causes and Prevention

Impacts of Human Activities on the Environment

Nature of Image Formed by a Concave Mirror

Distance-time Graph

Uses of the graphs

Another Example of a Distance-time Graph

Soil Formation and Its Importance

Plant Nutrients

Saving the Planet from Garbage and Litter

Dust and Smoke Particles in Air

Air Around Us

Adaptations in Aquatic Environment

Plant Adaptations in Desert

Desert Adaptations

Habitat and Its Types

Types of Solutions Based on Solubility

Definition of Vector and its Magnitude

The Carbon Cycle

Cycles Driving the Ecosystem

Causes of Population Growth

Applications of Pascal's Law

Pascal's Law: Statement and Demonstration

Variation in "g" Due to Shape of the Earth

Gravitational Force Satisfies Newton's Third Law

Different Forms of Energy

This chapter covers topics such as Unit Conversion, Units of Measurements, Rules of Writing Units, and Graphs.

Units and Graphs

This chapter covers topics such as Characteristics of Sound Waves, Production of Sound, Range of Hearing, Reflection of Sound, SONAR, Propagation of Sound, Types of Waves, and Applications of Ultrasound.

Sound

This chapter covers topics such as Work, Power, Mechanical Energy and Conservation Energy, and Concept of Energy.

Work and Energy

This chapter covers topics such as Force of Buoyancy and Archimedes Principle, Air and Atmospheric Pressure, Pascal's Principle, Pressure in Liquids, and Density and Relative Density.

Floating Bodies

This chapter covers topics such as Uniform Circular Motion, Universal Law of Gravitation, Free Fall, Stability, Centre of Gravity and Weight.

Gravitation

This chapter covers topics such as Definitions Related to Spherical Mirrors, Refraction of Light at Curved Surface, Real and Virtual image, Solar Cooker, and Image Formation by Spherical Mirrors.

Reflection of Light at Curved Surfaces

This chapter covers topics such as Types of Chemical Reactions, Chemical Changes and Equations, and Effects of Oxidation Reactions in Everyday Life.

Chemical Reaction and Equations

This chapter covers topics such as Subatomic Particles, Structure of an Atom, Distribution of Electrons in Different Orbits(Shells), Valency, and Atomic Number and Mass Number.

What is Inside Atom

This chapter covers topics such as Mole Concept, Chemical Formulae of Compounds, Laws of Chemical Combination, Atom, Ions, Molecule and Atomic and Molecular Mass.

Atoms and Molecules

This chapter covers topics such as Separating the components of a mixture, Solution, Mixture, Types of mixtures and Pure substances.

Is Matter Pure

This chapter covers topics such as Linear Momentum, Galileo's Experiment, Second law of Motion, First Law of Motion, Third Law of Motion, and Conservation of Momentum and Impulse.

Laws of Motion

This chapter covers topics such as Uniform and Non-uniform Motion, Rest and Motion, Speed and Velocity, Acceleration and Distance and Displacement.

Motion

This chapter covers topics such as Nitrogen Cycle, Carbon Cycle, Ozone layer and Ozone Depletion, Oxygen Cycle, Introduction to Biogeochemical Cycles and Water Cycle.

Biogeochemical Cycles

This chapter covers topics such as Soil Pollution and its Causes, Deforestation, Control of Soil Pollution, Introduction to Soil, Soil Fertility, Biomagnification, Soil Conservation, Formation of Soil and Properties of Soil, etc.

Soil Pollution

This chapter covers topics such as Adaptations in Aquatic Ecosystems, Other Adaptations in Organisms, Desert Ecosystems - Adaptations and Introduction to Habitats and Adaptations.

Adaptations in Different Ecosystems

This chapter covers topics such as Insects and Plant Diseases, Strategies to Increase the Food Production, Natural Pest Controlling Methods and Food Production Vs Population Growth.

Challenges in Improving Agricultural Products

This chapter covers topics such as Investigating Animal Behaviour, Introduction to Animal Behaviour, Human Behaviour, Experiments towards Animal Intelligence and Different Types of Animal Behaviour.

Animal Behaviour

This chapter covers topics such as Our Sense Organs: Ear, Our Sense Organs: Eye, Our Sense Organs: Nose, Our Sense Organs: Tongue, Our Sense Organs: Skin, Introduction to Sense Organs and Stimulation to Sensation.

Sense Organs

This chapter covers topics such as Diversity in Plants, Importance of Classification, Variations in Plants, Nomenclature, Hierarchy of Classification, Classification and Evolution, Diversity in Animals, Classification of Animals, etc.

Diversity in Living Organism

This chapter covers topics such as Transport Across the Membrane, Importance of Osmosis and Diffusion, Introduction to Plasma Membrane, and Functions of Plasma Membrane.

Plasma Membrane

This chapter covers topics such as Types of Animal Tissue and Introduction to Animal Tissues.

Animal Tissues

This chapter covers topics such as Plants as Multi-cellular Entities, Observation of Cells in Different Plant Parts, and Types of Plant Tissue.

Plant Tissues

This chapter covers topics such as Cell Theory, Cell Shape, and Parts and Types of the Cell.

Cell: Its Structure and Functions

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