NCERT solutions for class 8 science is an extremely essential study tool for CBSE students studying in class 8. NCERT science solutions for Class 8 is framed by expert science teachers to help students in their class 8 exam preparation and to clear the doubts instantly. With BYJU’S study material and solutions of NCERT Science Class 8 Book, students can get the answers to the questions provided in the textbook. Our solutions help you in understanding the concepts in a much better way and to prepare for the examinations.
NCERT solution provided here present you with answers to the textbook questions along with extra questions, exemplary problems, worksheets, MCQ’S and Short answering questions. Solving this question will help you to prepare notes and to understand the concept thoroughly.
If you have trouble in understanding a topic related to science, you can verify the answers to the questions given at the end of each topic of CBSE Class 8 science book. BYJU’S provides CBSE class 8 science solutions in PDF format which can be accessed and downloaded easily from anywhere and at any time.
Chapterwise NCERT Class 8 Science Solutions
Features of BYJU’S NCERT Solutions for Class 8 Science
- These solutions include chapter-wise & exercise-wise solutions to class 8 science textbook questions
- The solutions are easy to understand and are provided in simple words.
- Diagrams are included for better understanding.
- CBSE Class 8 Science Solutions are given in a step-by-step manner to help students understand each concept easily.
NCERT Class 8 Science Solutions
Chapter 1: Crop Production and Management
This chapter has been included to make students understand how the food is being produced through the agricultural practices. Further this chapter elaborate that crops are mainly categorized into two types in India based on the season i.e rabi and kharif. The basic practices of crop production includes following points which are explained in detail in this chapter.
- Preparation of soil
- Adding manure and fertilizers
- Protecting from weeds
Moreover, the traditional and modern method of irrigation has been explained. At the end the short brief of animal husbandry is described.
Chapter 2: Microorganisms – Friend and Foe
The chapter starts with the definition of microorganism and then its concepts has been explained with the help of 2 activities. After that it has been explained that how microorganism plays an important roles in our lives through various examples:
- Making of curd and bread
- commercial use of microorganism
- Use of microorganism in medicines
- Increasing soil fertility
After this, it has also been explained that microorganism are harmful and can cause various diseases to humans, animals and plants. Food poisoning is caused due to these harmful microorganism. Further in this chapter, different methods of food preservation has been explained. The chapter ended with the nitrogen fixation and nitrogen cycle which is described by a diagram.
Chapter 3: Synthetic Fibres and Plastics
The chapter 3 of NCERT Class 8 science book describes the synthetic fibres and its type (rayon, nylon, polyester and acrylic). Along with this the characteristics of synthetic fibres are explained in detail. Then , teh chapter introduces students to plastics, its properties and effect of it in environment.
Chapter 4: Materials – Metals and Non Metals
This chapter describes about the physical and chemical properties of metals and non metals. To explain these properties in a better way, activities are included in NCERT book. At the end uses of metals and non metals is explained.
Chapter 5: Coal and Petroleum
This chapter talks about natural resources and its classification. It explains that coal, petroleum and natural gas are fossil fuels that are formed from the dead remains of living organisms millions of years ago. Then it describes how coke, coal tar and coal gas are formed from coal. This chapter also describe about refining of petroleum. Further the concept of natural gas is explained. At the chapter is ended by making students aware that natural resources are limited so we should use them wisely.
Chapter 6: Combustion and Flame
In this chapter students will study about the combustion and its different types. It has been beautifully explained with the help of activities. The measures to control the fire is mentioned. After this the concept of flame and structure of flame is explained. The chapter is ended with the topic of fuel, fuel efficiency and harmful effects of burning the fuel.
Chapter 7: Conservation of Plants and Animals
This chapter put emphasis on the deforestation and its cause, consequences of deforestation, how to conserve forests and wildlife. Further it explains about Biosphere reserve, flora and fauna, endemic species, wildlife sanctuary, national park, red data book, migration, recycling of paper and at the end reforestation.
Chapter 8: Cell – Structure and Functions
In this chapter 8, students will get to know that cell is the smallest living part of an organism. They will learn that cells exhibit a variety of shapes and sizes and number of cells varies from organism to organism. The cell structure and function is described . The different parts of the cell are explained in detail:
- Cell Membrane
The chapter ended with the comparison of plants and animal cell.
Chapter 9: Reproduction in Animals
In this chapter students will study that there are two modes of reproduction i.e sexual and asexual reproduction, through which animal reproduce. The topic of sexual reproduction is described in detail where students will get familiar with the male reproductive organs, female reproductive organs, fertilization, development of embryo, viviparous and oviparous animal. At the end of this chapter asexual reproduction is explained.
Chapter 10: Reaching the Age of Adolescence
In this chapter students will learn the role of hormones that bring change in human body and transform a child into an adult. The chapter starts with the explanation of Adolescence and Puberty. Then, the changes introduced during puberty are explained:
- Increase in height
- Change in body shape
- Voice change
- Increased activity of sweat and sebaceous glands
- development of sexual organs
- Reaching mental, intellectual and emotional maturity
The chapter further explains the topics of secondary sexual characters, role of hormones in initiating reproductive function, reproductive phase of life in humans, sex determination, other hormones except sex hormones, role of hormones in completing the life history of insects and frogs, reproductive health.
Chapter 11: Force and Pressure
This chapter is an important part of physics. Students will find this chapter interesting as lots of activities are given to explain the concepts. It explains about how a force arises from the interaction of two objects. Then it explains that force can be a push or a pull. It can change the state of motion or shape of an object. Then the topics such as contact forces, non-contact forces, pressure, pressure exerted by liquids and gases, atmospheric pressure are elaborated in detail.
Chapter 12: Friction
This chapter talks about force of friction, factors effecting friction, how friction can be increased and reduced. At the end of this chapter the topic of fluid friction is described.
Chapter 13: Sound
Sound plays an important role in humans lives by helping us to communicate with each other. Here, in this chapter students will get all answers related to sound such as how sound produces, how does it travel, how do we hear sound, why some sounds are louder.
Chapter 14: Chemical Effects of Electric Current
This chapter explains that some liquids are good conductor of electricity and some are poor conductor of electricity. Further it elaborates the topic on “chemical effects of electric current” and electroplating.
Chapter 15: Some Natural Phenomena
This chapter will discuss about the destructive natural phenomena i.e lighting and earthquakes. At the end of the chapter steps to minimize the destruction from these natural phenomena is also explained. This chapter has been added so that students become aware of such natural phenomena and protect themselves from such situations.
Chapter 16: Light
The world is full of colours and beautiful things. This chapter will let us know that through light we are able to see the things around us. This chapter explains the law of reflection, regular and diffused reflection, multiple reflection. It also describes that sunlight is known as white light and it consist of 7 colours. Splitting of light into its constituents colours is known as dispersion. The human eye is explained with a diagram. At the end the chapter explains how we should take care of our eyes and how visually impaired persons can read and write.
Chapter 17: Stars and The Solar System
This chapter talks about the celestial objects, the moon, stars and constellations. After this, the solar system has been described along with the feature of each planet included in the solar system. Then some other members of the solar system are also described which includes asteroids, comets, meteors and meteorites, artificial satellites.
Chapter 18: Pollution of Air and Water
This chapter make aware about the harmful changes that are taking place in our surrounding due of air and water pollution and its effect in human lives. The chapter start with the air pollution and how air gets polluted. Then it describes the impact of air pollution on Taj Mahal. Further the concept of greenhouse effect and methods to reduce the air pollution are explained. After this the chapter discuss about water pollution and how how water get polluted. At the end it describes the method through which water is purified and water pollution can be controlled.
Tips to Ace CBSE Class 8 Exams
- Get well versed with the syllabus before starting exam preparation
- Be aware of the test format, number and type of the questions test include.
- The daily assignments, notes, hand-outs are indicators of the pattern of your teacher’s thinking. From there, you can analyse the important points and determine the question types.
- Study every day to understand the topic and to clear the doubts.
- While studying, break down big concepts into smaller chunks. Test yourself after studying each topic.
- Do not ignore easy concepts. This leads to errors in the examination which result in losing marks.
- Before you take the test, do not forget to give yourself a quick review. This will give you confidence and ensure that the topics are fresh in your mind.
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