CBSE Class 8 Science

CBSE Class 8 Science: An Overview

CBSE Class 8 is one of the most pivotal and beneficial positions in a student’s academic career. If you aim to score well in your further grades, you need to be clear with understanding all basic elements of this particular class since it is quite essential for your future studies. For every subject in CBSE Class 8, the student must understand the concepts in detail because the knowledge levels of the upcoming grades will be dependent on this very class. So, say YES to happy learning and NO to pre-exam pressures!

Biology Have you ever wondered how reproduction in plants takes place? Or how does our body function? Curious, isn’t it? In Biology of Class 8, get introduced to such interesting topics. We also provide video solutions along with the syllabus that will help the students in studying Biology.

Chemistry Class 8 Chemistry is the beginning of knowing Chemistry in depth. It is a subject that consists of theoretical as well as numerical questions. For an effective study plan, you need to learn what is there in CBSE Class 8 Chemistry in detail.

Physics in class 8 of the CBSE board helps the students understand the world around us more prominently. But before that, one needs to understand the syllabus properly and the concepts associated with it. So, get ready for a better understanding!

Get ready to know about metals and non-metals and their different properties in this curriculum.

Syllabus For Science Class 8

The CBSE course structure is designed in a manner to ensure that students do not go through a lot of pressure, moreover, books are made interactive and interesting for students to enjoy their studies. A lot of fun activities are included in between the chapters to help students learn in a playful way. It makes the process of conveying knowledge to the students efficient and healthy.

Chapter-1 Crop Production and Management

In this chapter, the introduction to agriculture is given followed by a few frequently used practices used on the field and also the definition of irrigation, harvesting, usage of fertilizers, and manure explained with the pictorial representation for better understanding. The sub-chapters are:

1.1: Agricultural Practices

In this section, we discuss various agricultural practices; seasons as rabi and Kharif.

1.2: Basic Practices of Crop Production

This section gives an overview of the steps in the process of crop production.

1.3: Preparation of Soil

In this section, we discuss the 4 steps in the preparation of soil and agricultural implements…

1.4: Sowing

This subtopic explains good quality seeds, high-yielding seeds

1.5 Adding Manure and Fertilizers

This subtopic explains the importance and after-effects of manure and fertilizers.

1.6: Irrigation

In this section, we learn about the importance of irrigation in crop production and crop management.

1.7: Protection from Weeds

In this sub-topic, we learn about various methods to gain protection against weeds.

1.8: Harvesting

Here, we see the background of harvest in India and the importance of harvest festivals.

1.9: Storage

In this subtopic, various ways of storing the harvest are mentioned.

1.10: Food from Animals

In this subsection, we look into the concept of food from animals and animal husbandry.

Chapter-2 Microorganisms: Friend and Foe

In this chapter, students get to know every basic detail on microorganisms, like what exactly they are, where do they live, causes for their presence, etc, which are well explained with pictorial representation and activities for better understanding purposes. The sub-chapters are:

2.1: Microorganisms

This section of the chapter familiarizes us with the concept of microorganisms and microbes; their activity and viruses.

2.2: Where do Microorganisms Live?

Here we look into different systems where microorganisms exist.

2.3: Microorganisms and Us

This section discusses alcohol production concerning microorganismsnisms.

2.4: Harmful Microorganisms

This section discusses various other microorganisms that cause harm and different communicable diseases.

2.5: Food Preservation

This section discusses the techniques to preserve food using salt, s, sugar, and chemicals.

2.6: Nitrogen Fixation

This subsection deals with the nitrogen cycle in the atmosphere.

Chapter-3 Synthetic Fibres And Plastics

In this chapter, topics like various synthetic fibers with examples and definitions for each and their properties, characteristics are discussed. Apart from that definition of plastics, its merits, and demerits of using it in abundance and the harm to the environment are explained in detail followed by a few activities. The sub-chapters are:

3.1: What are Synthetic Fibres?

This section of the chapter explains what synthetic fibers are along with a few examples of fibers like rayon, nylon, polyester, acrylic.

3.2: Types of Synthetic Fibres

In this sec, we discuss various types of synthetic fibers like thermoplastics and thermosets.

3.3: Characteristics of Synthetic Fibres

In this subset, we look into different characteristics of synthetic fibers.

3.4: Plastics

In this section of this chapter, we learn about plastics.

3.5: Plastics as Materials of Choice

This discusses how biodegradable plastics can be a better choice than microplastics.

3.6: Plastics and the Environment

This subtopic encourages the recycling and reuse of plastic and its effect on the environment.

Chapter-4 Materials: Metals and Non-Metals

This chapter is an interesting and experimental one, as there are a few activities that are quite exploring. This unit involves definitions of metals and non-metals followed by their differences, properties, uses, and applications with relevant examples. The sub-chapters are:

4.1: Physical Properties of Metals and Non-metals

In this section of this chapter, we learn about the physical properties of metals and non-metals and their reaction to water and acids.

4.2: Chemical Properties of Metals and Non-metals

This section discusses the chemical properties of metals anonmetalsals and their reaction with water and acids.

4.3: Uses of Metals and Non-metals

Here we discuss the advantages es metals and nonmetals.

Chapter-5 Coal And Petroleum

In this chapter, natural resources like coal and petroleum are discussed in detail. Starting with their meanings, their nature, properties, steps to preserve them as they are scarce resources, are a few topics covered in this unit. The sub-chapters are:

5.1: Coal

This section explains coke, coal, tar, and coal gas and their applications.

5.2: Petroleum

In this section, we learn about petrol sources, their manufacturing, and their byproducts.

5.3: Natural Gas

This subtopic of the chapter deals with natural gas and its applications.

5.4: Some Natural Resources are Limited

Here we look into how natural resources are scarce.

Chapter-6 Combustion And Flame

In this chapter, the definition of combustion and flame, differences, various types present in each of them, their structures, and functionalities are involved in this unit. The sub-chapters are:

6.1: What is Combustion?

This subtopic defines combustion and explains it with activities for inflammable & flammable substances.

6.2: How Do We Control Fire?

This section of the chapter discusses various ways to control fire.

6.3Types of Combustion

Here we distinguish amongst rapid combustion, spontaneous combustion and

explosive combustion.

6.4: Flame

In this section, we learn about flame.

6.5: Structure of a Flame

As continued from the above section, here we study the structure of flame.

6.6: What is a Fuel?

This subtopic discusses what is fuel and why it is considered to be one.

6.7: Fuel Efficiency

In this section of the chapter, we learn about fuel efficiency.

Chapter-7 Conservation of Plants and Animals

This is a vast chapter talking about various ways of protecting plants and animals, steps to increase greenery, various reservations place for both plants and animals, and also different species livelihood and modes of living are well explained in this unit. The sub-chapters are:

7.1: Deforestation and Its Causes

In this section we understand
the term deforestation; look into various causes of deforestation.

7.2: Consequences of Deforestation

This section of the chapter helps us understand the consequences of deforestation.

7.3: Conservation of Forest and Wildlife

In this subtopic, the importance of the conservation of forests and wildlife is emphasized.

7.4: Biosphere Reserve

Here, we introduce the term biosphere reserve.

7.5: Flora and Fauna

This section of the chapter defines and discusses the terms Flora and Fauna.

7.6: Endemic Species

Here we define the term endemic species and understand their role in the chain.

7.7: Wildlife Sanctuary

This subtopic explains what a wildlife sanctuary is.

7.8: National Park

Here we learn what a national park is and distinguish between a wildlife sanctuary and a national park.

7.9: Red Data Book

In this subtopic, the concept of the red data book is explained.

7.10: Migration

Here the topic of migration is discussed.

7.11: Recycling of Paper

In this section, the importance of Recycling Paper is discussed.

7.12: Reforestation

This section of the chapter deals with the concept of reforestation.

Chapter-8 Cell — Structure and Functions

This chapter comes under anatomy under classification. Beginning with a history of cells, the definition of cells, various shapes, and functionalities of cells in living organisms, structure, and parts of cells are clearly explained in this unit. The sub-chapters are:

8.1: Discovery of the Cell

In this section, we learn about how a cell was discovered.

8.2: The Cell

This section aims at the understanding of cell and cell components.

8.3: Organisms show Variety in Cell Number, Shape, and Size

Here we study the wide range of varieties organisms show in cell number, shape, and size.

8.4: Cell Structure and Function

In this section, we study the structure of the cell and its functions of the cell.

8.5: Parts of the Cell

As continued from the above section, here we study the components of a cell.

8.6: Comparison of Plants and Animals Cells

This section distinguishes between plant cells and animal cells.

Chapter-9 Reproduction In Animals

This chapter talks about various reproduction modes with examples and pictorial representation for better understanding. The sub-chapters are:

9.1: Modes of Reproduction

This section of the chapter aims at introducing the Modes of Reproduction

9.2: Sexual Reproduction

In this section, we learn about Sexual Reproduction

9.3: Asexual Reproduction

In this module, we discuss asexual Reproduction.

Chapter-10 Reaching The Age Of Adolescence

This chapter discusses some important topics. The meaning of adolescence, puberty, functionalities of various hormones are explained here. The sub-chapters are:

10.1: Adolescence and Puberty

This subsection aims at explaining the terms Adolescence and Puberty.

10.2: Changes at Puberty

In this section, we look into the changes that are observed at puberty.

10.3: Secondary Sexual Characters

Here we look into the secondary sexual characters.

10.4: Role of Hormones in Initiating Reproductive Function

This chapter highlights how hormones play an important role in Initiating Reproductive Function.

10.5: Reproductive Phase of Life in Humans

This subtopic aims at improving understanding of the Reproductive Phase of Life in Humans.

10.6: How is the Sex of the Baby Determined?

In this subtopic, we discuss how the sex of the baby is determined

10.7: Hormones other than Sex Hormones

In this subsection we look into various other hormones that are present in our body.

10.8: Role of Hormones in Completing the Life History of Insects and Frogs

Here we try to understand the role of Hormones in Completing the Life History of Insects and Frogs.

10.9: Reproductive Health

This sub-topic aims at improving understanding about reproductive

health.

Chapter-11 Force And Pressure

In this chapter, the high priority concepts like force, pressure, types of forces and their properties, behavior, and the shapes they take in day-to-day life activities, etc are well explained. The sub-chapters are:

11.1: Force: A push or a Pull

In this topic the term force is defined and explained with an example.

11.2: Forces are due to an Interaction

Here we discuss various types of forces that occur due to an interaction.

11.3: Exploring Forces

In this section of the chapter, we explore different types of forces.

11.4: A Force can Change the State of Motion

In this sub-topic, we try to understand how a force can Change the State of Motion.

11.5: Force can Change the Shape of an object

This subtopic elaborates on how force can change the shape of an object.

11.6: Contact Forces

In this subtopic the concept of contact forces is discussed.

11.7: Non-contact Forces

Here we discuss non contact forces.

11.8: Pressure

In this subsection we discuss what pressure is.

11.9: Pressure Exerted by Liquids and Gases

As continued from the above section we understand how Pressure is Exerted by Liquids and Gases .

11.10: Atmospheric Pressure

In this section of this chapter we look into the concepts of Atmospheric Pressure.

Chapter-12 Friction

Friction is a continuation of the previous chapter, where friction is another type of force, its properties, characteristics with relevant examples and activities are a few topics that are discussed in detail. The sub-chapters are:

12.1: Force of Friction

In this section we define the force of friction.

12.2: Factors affecting Friction

As continued from the above topic we explore the factors that affect friction.

12.3: Friction: A Necessary Evil

In this topic we understand why friction is evil and look into the measures to control it.

12.4: Increasing and Reducing Friction

In this section we understand what is Increasing and Reducing Friction

12.5: Wheels Reduce Friction

This subtopic helps us understand what reduces friction

12.6: Fluid Friction

This section of the chapter elaborates on fluid friction

Chapter-13 Sound

This chapter is one of the experimental units with an ample number of activities and solved examples explaining in detail all the important information on sound, its types, and properties. The sub-chapters are:

13.1: Sound is Produced by Vibrating Bodies

In this section, we understand why Sound is Produced by Vibrating Bodies

13.2: Sound Produced by Humans

In this module, we look into the sound produced by humans.

13.3: Sounds Needs a Medium for Propagation

This part of the chapter discussed how Sounds Needs a Medi
um for Propagation

13.4: We Hear Sound through Our Ears

Here we look into the Sound through Our Ears and its range.

13.5: Aptitude, Time Period, and Frequency of a vibration

In this section, we define the Aptitude, period, and frequency of a vibration

13.6: Audible and Inaudible Sounds

This section of the chapter discusses the Audible and Inaudible Sounds

13.7: Noise and Music

Here we distinguish between Noise and Music

13.8: Noise Pollution

This subtopic distinguishes between Noise and pollution.

Chapter-14 Chemical Effects Of Electric Current

In this chapter, the definition of electricity and electric current, conductors, insulators, and also chemical properties and effects are clearly explained in this unit. The sub-chapters are:

14.1: Do Liquids Conduct Electricity?

In this section, we study what kind of liquids can conduct electricity.

14.2: Chemical Effects Of Electric Current

Here we understand the Chemical Effects Of Electric Current

14.3: Electroplating

In this part of the chapter, we study what Electroplating is and different methods to use it.

Chapter-15 Some Natural Phenomena

This chapter exclusively talks about natural disasters, their properties, behaviors, and the major causes of their occurrences are well explained in detail with examples and conducting activities for better understanding. The sub-chapters are:

15.1: Lightning

In this section, we define the term Lightning

15.2: Charging by Rubbing

This section elaborates on how lightning works i.e Charging by Rubbing

15.3: Types of Charges and Their Interaction

This module illustrates what kind of charges lead to what kind of interaction.

15.4: Transfer of Charge

This section aims at building an understanding of how the charge is transferred.

15.5: The Story of Lightning

What is the story behind Lightning

15.6: Lightning Safety

In this chapter, we understand the safety measures we take for Lightning

15.7: Earthquakes

In this section, we understand the relation between Lightning and Earthquakes

Chapter-16 Light

This chapter exclusively talks about Light, its properties, behaviors, and the effects of light are well explained in detail with examples and conducting activities for better understanding. Diffraction, Reflection, and prism experiment are a few very important topics under this chapter. The sub-chapters are:

16.1: What makes Things Visible

In this chapter, we define the term Light

16.2: Laws of Reflection

Here we discuss the Laws of Reflection

16.3: Regular and Diffused Reflection

In this section, we distinguish between Regular and Diffused Reflection

16.4: Reflected Light Can be Reflected Again

This section elaborates on how Reflected Light Can be Reflected Again

16.5: Multiple Images

This section explains about Multiple Images

16.6: Sunlight – White or Coloured

In this section, we understand what is the composition of sunlight.

16.7: What is inside Our Eyes?

This section deals with how our eyes perceive light.

16.8: Care of the Eyes

Here we study how to take care of the eyes.

16.9: Visually Impaired Persons Can Read and Write

In this section, we see how Visually Impaired Persons Can Read and Write

16.10: What is the Braille System?

Here we understand what is Braille System

Chapter-17 Stars And The Solar System

This chapter is the most interesting and fun in the syllabus and almost repeated every year with the addition of a few deeper concepts. This unit is well explained with pictorial representation and activities for the students to make class exciting and lively. The sub-chapters are:

17.1: The Moon

This section aims at a better understanding of the moon

17.2: The Stars

In this section, we study the origin of stars.

17.3: Constellations

In this section, we look into what a constellation is.

17.4: The Solar System

Here we study what a solar system is.

17.5: Some Other Members of the Solar System

In This section, we study the members of our solar system.

Chapter-18 Pollution of Air and Water

This is another easy and scoring chapter in the syllabus, as most of the topics are self-explanatory and easily understandable. The sub-chapters are:

18.1: Air Pollution

In this section, we define air pollution

18.2: How does Air Get Polluted?

This section aims at helping students understand how air is polluted

18.3: Case Study- The Taj Mahal

As mentioned in the above section, we further explain how air pollution has affected one of the 7 wonders.

18.4: Greenhouse Effect

This section defines and elaborates on the greenhouse effect

18.5: What can be done?

As continued from the above section we look into the measures that can be taken to control it.

18.6: Water Pollution

In this section, we define water pollution.

18.7: How does Water Get Polluted?

Here we study how Water Gets Polluted

18.8: What is Potable Water and How is Water Purified?

In this section, we explain what is Potable Water

and How is Water Purified

18.9: What Can be Done?

In this section, we look into measures of how water

pollution can be prevented.

NCERT Solutions For Science Class 8

NCERT Class 8 Book Pdfs

Exercise

Important Questions For Science Class 8

Solved Examples For Science Class 8

Notes For Science Class 8

CBSE Class 8 Science Videos

https://youtu.be/qjUfk3lD1Cs

Learn about the “Advantages of using CNG & LPG as Fuel” from our SpeedLabs mentor “Paritosh Rao” in just 2 minutes.

https://youtu.be/gCTTC3E8UJ8

Learn about the nature of “Metals & Non-Metals” from our SpeedLabs mentor “Ankush Garg” in just 2 minutes.

https://youtu.be/tGCQQjQnhfU

Learn about the nature of “Metals & Non-Metals” from our SpeedLabs mentor “Ankush Garg” in just 2 minutes.

https://youtu.be/-0ieoliH3iQ

Learn about the Various Chemical Effects of Current” from our SpeedLabs mentor “Paritosh Rao” in just 2 minutes.

https://youtu.be/I0h5wpaD8cI

Learn in detail about the term Metamorphosis and its examples from our SpeedLabs mentor “Shravan Lodhi” in just 3 minutes.

https://youtu.be/bqmuI_bKNVc

Learn in detail about the Processes involved in Sugarcane production from our SpeedLabs mentor “Shravan Lodhi” in just 1 minute.

https://youtu.be/2dk2BUWuyr0

Learn in detail about the Female Reproductive system and its various parts from our SpeedLabs mentor “Shravan Lodhi” in just 1 minute.

https://youtu.be/bmuajjOkr-w

Learn the reason behind “not keeping Lemon pickle in Aluminium Utensil” from our SpeedLabs mentor “Ankush Garg” in just 1 minute.

CBSE Science Class-8