Science

Chemistry covers chapters such as Matter Around Us, What is inside the atom?, Is Matter Pure? and, Atoms, Molecules and Chemical Reactions

Chemistry

Physics covers chapters such as Sound, Motion, Heat, Gravitation, Laws of Motion, Work and Energy, Refraction of Light at Plane Surfaces and, Floating Bodies

Physics

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

Biology

Biology Class 9

Physical Science Class 9

SCIENCE TEXTBOOK FOR CLASS IX

Endocytosis and Exocytosis Across the Cell

Sound Quality or Timbre

Classification of Animals

Adaptive Radiation

Weight of an Object on Moon

The Specialised Cells of Anabaena

Valencies of Some Common Ions

The Relationship Between Classification and Evolution

Meristematic Tissues

Afforestation Programmes

Important Uses of Fossil Fuels

Exhaustible Sources of Energy

Fossil Fuels

Centre of Mass and Centre of Gravity

Principle of Floatation

How Energy Impacts Environment?

Changing the State of a Water Sample

Practical Application of Total Internal Reflection

Total Internal Reflection: How It Occurs?

Depression in Freezing Point

Classification of Waves

Conservation of Mechanical Energy

Distance vs Displacement

Electronic Configuration of Elements

Bohr's Atomic Model

The Ear

The Eye

Structure of Neuron

Epithelial Tissue

Classification of Living Things

An Ideal Fuel

The Categories of Stimulus and Response

Types of Chemical Reactions

Storage of Grains

Spoiling the Soil

Study of the Soil Particles

Constituents of the Soil

What Makes the Soil?

What Makes Water a Wonder Liquid?

The Oxygen Cycle

Soil Profile

Study of Infrasound and Ultrasound in Waves

Sound Propagation

Density of Substances

A Formal Proof of Archimedes' Principle

Archimedes’ Principle: Statement and Applications

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?

Law of Conservation of Mass

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

Rate of Evaporation: Surface Area and Air Movement

Effect of Pressure on Gases

Effect of Temperature on Interconversion of States

The Three Phases of Water

Diffusion in Solids, Liquids and Gases

Molecular Arrangement in Gases

Molecular Arrangement in Liquids

Molecular Arrangement in Solids

The Three States of Matter

Features of the Animal Cell

Nucleus and Lysosomes

Cellular Anatomy of Plant Cell

Ecosystem

Nitrogen Cycle

Pesticides and Weedicides

Crop Production and Crop Improvement

Soil Erosion - Causes and Prevention

Another Example of a Distance-time Graph

Introduction to Graphs

Blood and Its Components

Diffusion in Plants and Humans

Soil Horizons

Methods of Prevention from Corrosion

Heat: The Flow of Energy

Introduction to Heat

Plant Nutrients

Plant Adaptations in Desert

Desert Adaptations

Organisms and Adaptations

In this chapter, we will discuss the production and propagation of sound through different mediums. We will come across the description of some musical instruments. It also highlights the structure of the ear with the help of a well-labelled diagram.

Sound

This chapter provides knowledge of thermal equilibrium. It explains specific heat and its applications. It details the method of mixtures and its principles. It briefs on evaporation, condensation, boiling, melting, and freezing.

Heat

This chapter describes the term work with the aid of examples. It explains kinetic, potential, and mechanical energy along with the units and derivations. It also discusses the law of conservation of energy and sources of energy.

Work and Energy

This chapter explains the concept of thrust and pressure with their units. It elaborates on Archimedes’ principle and its application. We will learn about buoyancy and how to measure the force of buoyancy. It also explains Pascal's principle.

Floating Bodies

This chapter deals with gravity and gravitational force. It explains the universal law of gravitation and acceleration due to gravity. Mass, weight, and free-falling of the body are also discussed here in detail along with their derivations.

Gravitation

This chapter describes the refraction of light at plane surfaces. It explains the relative refractive index, total internal refraction, and the applications of total internal reflection. It briefs on the refraction of light through a glass slab.

Refraction of Light at Plane Surfaces

In this chapter, we will learn about Newton's laws of motion. Each law is explained in detail with the aid of activities. It discusses inertia, mass and acceleration. A brief note on the conservation of momentum and impulse is also given here.

Laws of Motion

This chapter deals with motion and its types. It defines distance, displacement, and velocity. We will learn about uniform and non-uniform motion with the aid of examples. It also explains acceleration and equations of uniform accelerated motion.

Motion

This chapter sheds light on the structure of an atom and Thomson’s model of atoms. It briefs on Rutherford’s alpha particles scattering experiment. It explains the distribution of electrons in different orbits and applications of isotopes.

What is inside the atom?

In this chapter, we will study the laws of conservation of mass and laws of constant proportions. It briefs on atoms, molecules, and elements. It also explains molar mass, mole concept, and chemical reactions.

Atoms, Molecules and Chemical Reactions

This chapter describes the mixture and its types. It briefs on solutions and their properties. We will learn the different methods by which we can separate the components of a mixture. A brief note on pure substances is also given here.

Is Matter Pure?

This chapter defines matter and discusses the states and properties of matter. We will learn the effects of temperature and pressure on the matter. It also explains the process of evaporation and condensation.

Matter Around Us

This chapter explains that the biogeochemical cycle involves both biotic and abiotic components. We will study the significance of their interdependent nature. Moreover, it demonstrates the transfer of matter and energy.

Biogeochemical Cycles

This chapter discusses the process of soil formation and the properties and fertility of the soil. It covers the causes of land pollution along with a brief note on biomagnification and deforestation. It briefs on the pollution of underground soil.

Soil Pollution

This chapter focuses on the flow of ecosystem comprising different habitats. It also discusses the method of adaptation according to climate and circumstances with the aid of examples and pictures.

Adaptations in Different Ecosystems

The chapter discusses the numerous challenges faced in improving agricultural products. It also determines the ratio of food production and the growth of the population. Furthermore, it involves activities for illustrating these concepts.

Challenges in Improving Agricultural Products

This chapter distinguishes animal behaviour from human behaviour. It details the types of animal behaviour, including instinct, imprinting, conditioning and imitation. It also explains the methods of investigating the behaviour.

Animal Behaviour

In this chapter, we will have a detailed study of the sense organs, including ears, eyes, tongue, mouth and skin. It also explains the process of stimulation to sensation. Functions and responses of each sense organ are discussed here.

Sense Organs

This chapter discusses the basis of classification of organisms, classification and evolution of organisms, the hierarchy of classification, Plantae kingdom, Animalia kingdom and nomenclature.

Diversity in Living Organisms

This chapter covers the phenomenon exhibited by the plasma membrane. It explains the process of plasma getting in and going out, along with a brief on osmosis and filtration. It also discusses the functions of the plasma membrane.

Plasma Membrane

In this chapter, we will study the animal tissues in detail. It elaborates on the classification of animal tissues. The characteristics of epithelial, muscular, nervous and connective tissues are also discussed here.

Animal Tissues

This chapter describes different types of plants and their tissue functions. It describes the meristematic and permanent tissues found in plants. Further, the classification of these tissues is also discussed here with the aid of pictures.

Plant Tissues

This chapter covers the description of the cell and its morphological structure. It also summarises its discovery. Furthermore, it comprises a pictorial representation of cells and activities for illustration.

Cell: Its Structure and Function

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