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Class 9 is one of the most crucial educational milestones to score best in class 10 board examinations. NCERT class 9 Science solution have been proved extremely helpful for students in laying a strong foundation of the subject. Our experts make these NCERT Solutions for Class 9 Science easy to understand, without compromising quality or the content covered. The answers to the questions related to the topics present in NCERT Solutions for Class 9 Science are explained in a simple and descriptive manner so as to aid students to solve even the most complex problems and numericals in exams. These solutions will improve the quality of their answers therby help them to get good scores in CBSE Class 9 Science Exams.
Home Revise’s all-inclusive NCERT class 9 Science Book solutions will help students extensively in their regular study sessions, daily homework and assignments, as well as exams.
NCERT class 9 Science syllabus mainly focuses on this NCERT Book for class 9 Science to make it student-friendly and useful for both the students and the competitive exam aspirants. Home Revise covers a detailed Science based syllabuses of various boards. NCERT Book for class 9 Science is perfectly compatible with almost every Indian education state and central boards and covers all topics of NCERT class 9 Science syllabus. Home Revise has developed all the syllabus of NCERT class 9 Science in an audio visual format
CBSE Class 9 Science Unit-Wise Weightage
|Unit No.||Unit Name||Marks|
|1||Matter - Its Nature and Behaviour||27|
|2||Organisation in the Living World||26|
|3||Motion, Force and Work||27|
Unit I: Matter-Nature and Behaviour
Nature of matter: Elements, compounds and mixtures.Heterogeneous and homogenous mixtures, colloids and suspensions.
Particle nature, basic units: Atoms and molecules, Law of constant proportions, Atomic and molecular masses.
Structure of atoms: Electrons, protons and neutrons, valency, chemical formula of common compounds. Isotopes and Isobars.
Theme: The World of the Living
Unit II: Organization in the Living World
Cell - Basic Unit of life: Cell as a basic unit of life; prokaryotic and eukaryotic cells, multicellular organisms; cell membrane and cell wall, cell organelles and cell inclusions; chloroplast, mitochondria, vacuoles, endoplasmic reticulum, Golgi apparatus; nucleus, chromosomes - basic structure, number.
Tissues, Organs, Organ System, Organism: Structure and functions of animal and plant tissues (only four types of tissues in animals; Meristematic and Permanent tissues in plants).
Health and Diseases: Health and its failure. Infectious and Non-infectious diseases, their causes and manifestation. Diseases caused by microbes (Virus, Bacteria and Protozoans) and their prevention; Principles of treatment and prevention. Pulse Polio programmes.
Theme: Moving Things, People and Ideas
Unit III: Motion, Force and Work
Motion: Distance and displacement, velocity; uniform and non-uniform motion along a straight line; acceleration, distance-time and velocity-time graphs for uniform motion and uniformly accelerated motion, derivation of equations of motion by graphical method; elementary idea of uniform circular motion.
Force and Newton’s laws: Force and Motion, Newton’s Laws of Motion, Action and reaction forces, Inertia of a body, Inertia and mass, Momentum, Force and Acceleration. Elementary idea of conservation of Momentum.
ONLY FOR INTERNAL ASSESSMENT
Note: Learners are assigned to read the below listed part of Unit IV. They can be encouraged to prepare a brief write up on any one concept of this Unit in their Portfolio. This may be an assessment for Internal Assessment and credit may be given (Periodic assessment/Portfolio). This portion of the Unit is not to be assessed in the year-end examination.
Theme: Natural Resources: Balance in Nature
Unit IV: Our Environment
Physical resources: Air, Water, Soil. Air for respiration, for combustion, for moderating temperatures; movements of air and its role in bringing rains across India.
Air, Water and Soil pollution (brief introduction). Holes in ozone layer and the probable damages.
Bio-geo chemical cycles in nature: Water, Oxygen, Carbon and Nitrogen.
Gravitation: Gravitation; Universal Law of Gravitation, Force of Gravitation of the earth (gravity), Acceleration due to Gravity; Mass and Weight; Free fall.
Work, energy and power: Work done by a Force, Energy, Power; Kinetic and potential energy; Law of conservation of energy.
As every chapter is of importance when it comes to the NCERT Class 9 Science Syllabus, students need to possess a vast knowledge of the different concepts and topics to score good marks in the exams. Home Revise’s all-inclusive NCERT class 9 Science Book solutions will help you extensively in your regular study sessions, daily homework and assignments, as well as your exams.
Home Revise has explained all the 9th class science concepts comprehensively. Below students will find the description of all the chapters of class 9 Science subject.
The NCERT book for class 9 Science start with the chapter “Matter In Our Surrounding”. Everything that we see around us is made up of material which is called a matter. These things occupy space and have mass. Earlier, Indian philosopher had classified matter in 5 basic elements, Panch Tatva – air, water, earth, sky and fire. Now, modern scientists have evolved with 2 types of classification i.e. based on physical property and chemical nature. In this chapter, students will learn about the physical properties of matter.
The matter is made up of particles and these particulars are very small. The particles of matter have space between them, they are continuously moving and attract each other. The matter around us exists in 3 different states – solids, liquids and gases. These states of matter arise due to variation in the characteristic of the particles of matter. All the 3 states of matters have been explained in-depth with the help of activities. Further, the textbook explains that the state of matter is inter-convertible. The state of matter can be changed by changing temperature or pressure. The phenomenon of change of a liquid into vapour at any temperature below its boiling point is called evaporation. The rate of evaporation depends upon the surface area exposed to the atmosphere, the temperature, the humidity and the wind speed. Evaporation also causes cooling.
This chapter of NCERT Class 9 Science Solutions students will study about the mixture, solution, properties of solutions, separation of mixtures, physical and chemical changes. Along with this, they will also learn about compounds and their properties, the difference between mixtures and compounds, classification of matter.
In NCERT Class 9 Science chapter 3, students will learn the laws of chemical combination, atoms and molecules. They will get to know how to write a chemical formula, molecular mass and mole concepts and some numerical problems related to these concepts.
This chapter of NCERT Class 9 Science deals with the various atomic models of atoms that were proposed by different scientists. In addition to it, this chapter also covers electrons distribution in different orbits, calculation of valency, atomic number and mass number.
This chapter of NCERT book for class 9 Science is related to the Biology part. In this chapter, students will get to know that cell is the fundamental unit of life. The whole chapter revolves around the cell and its structural organisation, in which students will learn about plasma membrane, cell wall, nucleus, cytoplasm and structure of an animal cell.
This chapter of NCERT Class 9 Science Solutions pertains to the basic definition of tissue and then elaborates on the Plant and Animal tissue with proper diagrams. Students will get to know the different types of plant and animal tissues with a detailed explanation of each.
This chapter of NCERT Class 9 Science Solutions deals with the classification of plants and animals. Students get to know that all living organisms are divided into 5 kingdoms namely Monera, Protista, Fungi, Plantae and Animalia. It also describes the classification and evolution, the hierarchy of classification.
In NCERT Class 9 Science chapter 8 describes motion, the speed with direction, rate of change of velocity, graphical representation of motion. Also, students will find the 3 equations of motion and numerical problems related to it. Overall, this chapter will be a mix of theory as well as the numerical part.
This chapter of NCERT book for class 9 Science explains the 3 laws of motions with the help of diagrams and examples. Below are the 3 laws of motions:
In chapter 10 of NCERT Class 9 Science, students will learn the universal law of gravitation and its importance, free fall, mass, weight, thrust and pressure, Archimedes’ principle and relative density. Students will also find numerical problems related to these topics.
In this chapter, the concept of work is defined with different activities, numerical and examples. The chapter also deals with energy and its different forms. Examples are given to explain all types of energy. The chapter ends with the topic “rate of doing the work”.
Chapter 12 of NCERT Class 9 Science, deals with concepts such as production of sound, propagation of sound, the reflection of sound, range of hearing, applications of ultrasound, the structure of the human ear. A few numericals are also there in the chapter which can only be solved after understanding the concepts. So, students must grasp and study the chapter carefully.
This chapter of NCERT Class 9 Science Solutions deals with health issues and different types of diseases. It covers topics like; Health and its failure, disease and its cause, infectious diseases. This chapter is added to make students aware of different types of diseases so that they take care of their health and be fit and healthy.
We are blessed with natural resources. These are essential to meet the basic requirements of all forms of life on Earth. So, this chapter has been included by NCERT to provide knowledge on types of resources available on the Earth. This chapter deals with the topics like air, water, soil, biogeochemical cycle and the ozone layer, its importance and how humans are polluting them.
The last chapter of NCERT Class 9 Science covers topics like Improvement in crop yields, manure, fertilizer, storage of grains, animal husbandry. This chapter provides knowledge regarding agriculture, farming and dairy.
Preparation for NCERT Class 9 Board Exams requires hard work and dedication. Science is a demanding subject, and to score well, you need to have a complete understanding of all the individual chapters from the NCERT Class 9 Science textbook. Home Revise is an e-learning platform that combines the benefits of e- learning and visual education to offer you top-quality educational animated videos and study material from the syllabus in the NCERT Class 9 Science Book Solutions.
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We hope that this detailed article on Book for class 9 Science helps you in your preparation and you crack the Class 9 exams or competitive exams with excellent scores. Best of luck!!!
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FAQs on Solutions for Class 9 Science
1. How do I score good marks in science class 9?
Practice is the only way for scoring more marks in the CBSE Class 9 Science Homerevise study app will make you to memorize all chapters as its presented in an animated formats. It’s audio visual effect makes student to understand concepts well and so remain in long term memory. Its the best way to score well in the exams as well as get command on the subject.
2. Which is the best book of science for Class 9 CBSE?
There is no one specific book for preparing Class 9 Science. Instead, we have covered all the concepts in NCERT Textbooks prescribed for Class 9 Science that can help in your Exams.
3. How many chapters are included in the NCERT Class 9 Science Syllabus?
The NCERT class 9 syllabus for Science consists of 15 chapters.
4. Where can I get the NCERT solutions for Class 9 Science?
You need not panic as we will give you all the NCERT Solutions for Class 9 Science all at one place on our site. View or download them and practice as and when you want.
5. What is included in the Home Revise Class 9 Science Solutions?
Home Revise covers the entire curriculum from the Book for Class 9 Science. We provide audio-visual learning modules for all the topics, definitions, concepts, exercises, solutions, and diagrams. Our study material is mapped from the Solutions for Class 9.
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