Science

Physics covers chapters such as Current Electricity, Reflection of Light, Laws of Motion, Work and Energy, Study of Sound, Information Communication Technology (ICT) and, Observing Space : Telescopes

Physics

Chemistry covers chapters such as Acids,Bases and Salts, Environmental Management, Measurement of Matter, Substances in Common Use and, Carbon: An important element

Chemistry

Biology covers chapters such as Energy Flow in an Ecosystem, Classification of Plants, Introduction to Biotechnology, Heredity and Variation, Life Processes in Living Organisms and, Useful and Harmful Microbes

Biology

Science and Technology Standard Nine

SCIENCE TEXTBOOK FOR CLASS IX

Overview of Human Digestive and Excretory Systems

RNA World

Seasons and Weather

Reactions of Metal Carbonates with Acids

Acid-base Indicators

pH Scale

Natural Radioactivity

Reflecting Telescope

Teflon: An Addition Polymer

Electrolysis of Aqueous Salts Using Inert Electrodes

Electrolysis of Aqueous Cupric Chloride

Electrolytic or Ionic Conductance

Characteristics of Diamond and Graphite

Tissue Culture and Its Applications

Speed of a Sound Wave

Introduction to Hydrocarbons

Preparation and Properties of Methane

Properties of Ionic Compounds

Electromagnetic Spectrum (I)

Reflex Action

Structure of Neuron

Classification of Living Things

Revisiting Ohm's Law & Resistivity

Further Discussion on Electric Resistance

Ohm’s Law & Introduction to Electric Resistance

Electrical Energy and Flow of Charge in a Circuit

General Terms Related to Spherical Mirrors

Mendel and His Experiments

Introduction to Heredity and Variation

Coordination in Plants

Nervous System: The Conductor of the Orchestra

Reflex Arc

The Categories of Stimulus and Response

Theories for Ascent of Sap

Transport of Water in Plants

Salt Solutions

Reaction of Acids with Metallic Oxides

Reactions of Acids with Metal Hydrogen Carbonates

Chemical Properties of Acids and Bases

Does the pH of Soil Matter?

pH of a Solution

The Oxygen Cycle

Study of Infrasound and Ultrasound in Waves

Factors Affecting the Speed of Sound in Air

Equations of Motion Using Graphs

More on Speed and Velocity

Muscular and Nervous Tissue

Connective Tissues

Complex Tissues (Xylem and Phloem)

Simple Permanent Tissue: Parenchyma

The Mole Concept

Molecules of Elements and Compounds

Law of Conservation of Mass

Atomic Mass, Molecular Mass and Formula Unit Mass

Atoms, Molecules and Ions

Hormones and Endocrine Glands

Nitrogen Cycle

Microbes - Tiny but Deadly

Process of Transpiration

Nature of Image Formed by a Convex Mirror

Nature of Image Formed by a Concave Mirror

Nature of Image Formed by a Plane Mirror

Symbols of Circuit Components

Distance-time Graph

Uses of the graphs

Another Example of a Distance-time Graph

Transport of Food in Plants

Natural Indicators

Mirror Formula and Magnification

Molarity and Its Units

The Carbon Cycle

Cycles Driving the Ecosystem

Bacterial Diseases: Typhoid and Cholera

Down's Syndrome

Chromosomal Abnormalities and Genetic Disorders

Inherited Traits

Sexually Transmitted Disease – AIDS

Nature of Physical Laws

Introduction to Centripetal Acceleration

Versatile Nature of Carbon

The Occurrence of Carbon Dioxide and Its Uses

Preparation of Sodium Chloride

Arrhenius Theory of Acids and Bases and Its Limitations

What are Electrolytes?

Excretory System

Nitrogen Bases

Organic Molecules of Life-Nucleic Acids

Flowering and Non-flowering Plants

Energy Flow in an Ecosystem

Food Chain in Aquatic Ecosystem

Food Chain and Food Web

Combination of Resistors in Parallel

Combination of Resistors in Series

Circuit Diagram of Electric Circuit

Verification of Ohm's Law

Electric Current

Electric Conductors and Insulators

Spherical Mirrors

Structure of DNA

Mendel's Monohybrid Crosses

This chapter explains the different types of light. It describes optical and radio telescopes. Moreover, it tells us about the Indian Space Research Organization (ISRO) situated in Bengaluru. We will also discuss Science and Technology in brief.

Observing Space : Telescopes

In this chapter, we will study various types of tissues present in plants and animals. We will also learn about biotechnology and agro-complementary occupations. Moreover, we will discuss the applications of biotechnology.

Introduction to Biotechnology

This chapter explains various types of chromosomes in detail. It describes the functions of ribonucleic acid. In addition, it highlights Mendel’s principle of heredity. We will also discuss some genetic disorders in brief.

Heredity and Variation

This chapter explains the transportation of various substances in plants. It further describes the excretion process and coordination in plants and humans. We will also study the human nervous system in detail.

Life Processes in Living Organisms

In this chapter, we will discuss various properties and uses of different salts. We will also learn about radioactive substances. Moreover, we will enhance our knowledge of different chemical substances that we use in our daily life.

Substances in Common Use

This chapter explains carbon, its occurrence, properties and allotropes. It covers hydrocarbon, carbon dioxide, and methane. The occurrence, properties, and uses of carbon dioxide and methane are also discussed here.

Carbon: An important element

This chapter describes the effect of temperature, density, and molecular weight on the speed of light. It also explains the concept of reflection of light. Furthermore, it explores the structure of the human ear and gives an idea about sonography.

Study of Sound

This chapter explains the laws of reflection. Light is the medium of illumination that makes sight possible. It discusses the types of reflection with the help of a diagram. It discusses the function and uses of a kaleidoscope and a periscope.

Reflection of Light

This chapter discusses different components of the computer and the types of software. It explains the importance of IT in science and technology, uses of information communication, and different opportunities in the computer field.

Information Communication Technology (ICT)

This chapter explores the importance of weather for the living world. It also explains the different methods of solid waste management. Moreover, it describes three basic principles of first aid and gives some emergency measures.

Environmental Management

In this chapter, we will learn about some useful microorganisms like lactobacilli and rhizobium. We will also discuss some harmful microorganisms in brief. In addition, we will explore antibiotics like penicillin and clostridium.

Useful and Harmful Microbes

In this chapter, we will understand the flow of energy in an ecosystem. We will discuss the carbon, nitrogen, and oxygen cycles in detail. Furthermore, we will explore the meaning of the food chain and food web.

This chapter deals with the classification of plants. It describes the three types of cryptogams—Thallophyta, Bryophyta, and Pteridophyta. Moreover, it explains gymnosperms and angiosperms in detail.

Classification of Plants

This chapter explains the Arrhenius theory of acids and bases, classification of acids and bases and the concentration of an acid or a base. It also discusses the pH value of the solution, acid and base, salt, and its types.

Acids,Bases and Salts

This chapter highlights the three major laws related to the measurement of matter. It also discusses the size and molecular mass of an atom. In addition, it explains the valency of different atoms and radicals.

Measurement of Matter

This chapter talks about the potential and potential difference of a cell, free electrons, and the current flowing through a wire. It also briefs on the conductors and insulators. Moreover, it discusses Ohm’s law and resistance.

Current Electricity

In this chapter, we will learn in detail the concept of energy and the relationship between work and energy. We will further study potential and kinetic energy which is present in the body during rest or in motion.

Work and Energy

This chapter enhances our knowledge of various types of forces. It discusses laws related to the motion of an object. Furthermore, it includes some graphs for uniform and non-uniform motion. It also briefs on the balanced and unbalanced forces.

Laws of Motion

Stem Anatomy of Monocots and Dicots

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