science

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

Physics covers chapters such as Sound, Force, Friction, Graphs of Motion, Stars and Solar System, Some Natural Phenomenon, Reflection of Light at Plane Surface and, Electric Conductivity of Liquids

Physics

Chemistry covers chapters such as Metals and Non-Metals, Coal and Petroleum, Synthetic fibres and plastics and, Combustion, fuels and flame

Chemistry

Biology covers chapters such as What is Science?, Reproduction in Animals, Biodiversity and Its Conservation, Why Do We Fall Ill?, Cell- The Basic Unit of Life, Different Ecosystems, Production of Food from Plants and, The Age of Adolescence

Biology

Physical Science Class 8

Biology Class 8

Basic Science for Class 8

Expanded Universal Science

Lakhmir Singh's SCIENCE FOR CLASS 8

NCERT Exemplar Science - Class 8

SCIENCE TEXTBOOK FOR CLASS VIII

Solar Eclipse: Concept and Types

Uncovering the Wonders and Risks of Cloning

Crop Harvesting

Production of Sound in Humans

Changes at Puberty

Knowing All About Puberty

Hormones and the Life Cycles of Insects and Frogs

Secondary Sex Characteristics

Fertilisers

Food Preservation

Stable Community and Biodiversity Conservation

Food Preservation (Pasteurisation)

Traditional Methods of Irrigation

Soil Preparation

The Structure of a Flame

Natural and Synthetic Fibres

Petrochemicals in Synthetic Fibres

Ploughing and Agricultural Implements

Biodegradable and Non-biodegradable Materials

Plastics and the Environment

Reproduction and Its Two Modes

Radioactive Wastes and Their Disposal

Acute and Chronic Diseases

Electrical Conductivity of Metals and Non-metals

Refining of Petroleum

Muscular Force

Contact and Non-contact Forces

Pinhole Camera: Construction

Construction and Working of Fire Extinguishers

Importance of Wheat & Rice

Distinguishing Metal and Non-metal Using Oxygen

Vaccination and Immunization

Events in Sexual Reproduction

Balance in Nature

Air Pollution

Reducing Global Warming

Asteroids, Comets, Meteors and Meteorites

The Inner Planets

The Sun

Stars in the Sky

Earth's Crust

Examples of Electrostatic Charging by Rubbing

Musical Sound and Noise

Loudness and Pitch

Rolling and Sliding Friction

Uses of Friction

Methods of Reducing Friction

Effects of Friction

Examples of Non-contact Forces

Forces and Motion

Forces Are Due to Interaction

Force: Push or Pull

Puberty, Menstruation and Menopause

Life Cycle of a Frog

Features of the Animal Cell

Nucleus and Lysosomes

Cellular Anatomy of Plant Cell

Structure of Onion Peel and Cork Cells

Ecosystem

Different Types of Combustion

Combustible and Non-combustible Substance

Ignition Temperature and Combustion

Chemistry of Fire

Types of Fuel and Their Uses

Reactions of Metals with Bases

Reactions of Metals with Acids

Reaction of Metals with Water

Reaction of Metals with Oxygen

Nitrogen Cycle

Microbes - Tiny but Deadly

Algae and Diatoms - Structure and Habitat

Pesticides and Weedicides

Manuring, Weeding and Irrigation

Types of Crops

Crop Production and Crop Improvement

Importance of Forests

Forests and Their Resources

Nature of Image Formed by a Plane Mirror

Distance-time Graph

Introduction to Graphs

Sundial

Recycling Plastic

Eclipses

How Is Honey Made?

Apiculture and Its Products

Methods of Charging

Water Pollution and Eutrophication

Air Pollution and Its Sources

Artificial Satellites

Characteristics of Potable Water

Energy Flow in an Ecosystem

Biotic and Abiotic Factors

Electric Conductors and Insulators

Flames and Its Types

Alloys and Their Applications

Reaction of Sulphur with Metals

Reactivity of Metals With Hydrochloric Acid

Chemical Properties of Metals

Chemical Reactivity of Metals

Thermal Conductivity of Metals

This chapter helps us understand the significance of graphs of motion. It explains various methods of drawing graphs with the aid of examples. We will also learn how to draw the graphs of objects moving with uniform and non-uniform speed.

Graphs of Motion

In this chapter, we will learn about the stars and the solar system. We will learn in detail about the phases of the moon, the constellations, and the movement of the sun. Further, we will study artificial satellites.

Stars and Solar System

This chapter discusses two destructive natural phenomena; lightning and earthquakes. It also discusses the steps to minimise destruction caused by these phenomena.

Some Natural Phenomenon

This chapter sheds light on the electric conductivity of liquids. It includes an activity that describes testing the electric conductivity of liquids. It also deals with good and bad conductors of heat in the liquid medium.

Electric Conductivity of Liquids

In this chapter, we will study the process of combustion with the help of activities. It highlights different types of combustion, along with examples of some combustible materials. We will also come across the definition of calorific value.

Combustion, Fuels and Flame

Through this chapter, we will explore the use of coal and petroleum products. It explains the differences between exhaustible and inexhaustible resources. A short note on the use of natural gas is also provided here.

Coal and Petroleum

This activity-based chapter explains the phenomenon of reflection with the help of images. It elaborates on plane mirror, reflection of light by plane mirrors, etc. It also includes lab activities to illustrate this concept.

Reflection of Light at Plane Surface

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 explains the classification of elements into metals and non-metals. It covers their physical and chemical properties. Further, it explains the various methods of extraction of metals from ores and the reactivity order of metals.

Metals and Non-Metals

This chapter comprises several activities to explain the differences between natural and synthetic fibres. It describes the use of plastics for various purposes. We will also study different types of plastics and their effect on the environment.

Synthetic Fibres and Plastics

In this chapter, we will explore friction and its types. It covers the factors affecting friction with the help of activities. We will come across different methods to reduce friction. A question bank is also provided here for practice.

Friction

This chapter highlights the concept of force with the aid of examples and activities. It describes the different types of forces in detail and their effects. We will also come across the definition of pressure along with its unit.

Force

This chapter discusses the significance of health. Here, we will also learn about the meaning of diseases, their types, causes and the different means of spread. Further, it discusses principles of treatment and prevention.

Why Do We Fall Ill?

This chapter emphasizes environmental pollution and the harmful effects it has on the environment. It highlights air pollution, natural disasters and pollutants. It also explains how human activities increase the pollution rate.

Not for Breathing - Not for Drinking

In this chapter, we will learn about animal husbandry, poultry and apiculture in detail. We will learn this with the help of examples, illustrations and visuals.

Production of Food from Animals

In this chapter, we will learn about the crops, their duration of growth and production. It explains various agricultural tasks from sowing to storing in detail with examples and pictorial illustrations.

Production of Food from Plants

In this chapter, we will learn about the ecosystem and its types and components with the help of examples, illustrations and visuals. We will also get to know about the changes in the ecosystem and the energy flow in the ecosystem.

Different Ecosystems

In this chapter, we will learn about the diversity of organisms on earth and the need to conserve them. It discusses biodiversity, the problem associated with its loss, and ways to conserve by protecting the areas.

Biodiversity and Its Conservation

In this chapter, we will learn about the endocrine system, the glands, and the hormones. We will study the role of hormones in the human body, the period of adolescence, the different stages of puberty in both men and women, and the menstrual cycle.

The Age of Adolescence

This chapter discusses different types of reproduction, reproduction in human beings, and the male and female reproductive organs. It also helps us to understand the life cycle of a frog through a project.

Reproduction in Animals

This chapter gives us information regarding various friendly microorganisms. It covers the activities to describe different uses of microorganisms. Also, we will explore some medicinal and commercial uses of microorganisms.

The World of Microorganisms: Part 2

This chapter talks about microbiology, which is the study of microorganisms. It describes the secret behind the invention of the powerful microscope. It also explains how this microscope helped scientists in observing microorganisms.

The World of Microorganisms: Part 1

Through this chapter, we will get a brief idea of the cells. We will discuss how cells help in performing various functions in our body. Further, we will learn about the basic structure and properties of cells.

Cell- The Basic Unit of Life

This chapter explains the individual and societal perspective of science. It discusses how scientists think and what they do. We will also learn about the scientific methods to work and the safety measures to be followed during the process.

What is Science?

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