Well-prepared Class 9th Science Notes can help students understand the concepts, topics and themes covered in all the chapters. The Revision Notes for Class 9 Science offered bybioinfopoint are based on the latest curriculum that is approved by CBSE. Students don't have to stress about finding multiple books to revise during the exam period with such handy notes. The key benefit of these Notes of Science Class 9 is that they cover all the essential pointers, explain diagrams with examples that allow students to score well in the exams.
CHAPTER WISE REVISION NOTES FOR CBSE CLASS 9 SCIENCE PDF DOWNLOAD
Revision Notes for Class 9 Science
Revision Notes of Chapter 1 Matter in Our Surroundings
These notes cover the concept of nature and what elements make up living and nonliving things. It elaborates on the physical nature of matter. Its characteristics, states of matter, change of state of matter, diffusion, temperature effect, and effect of change of pressure. The notes also cover topics like evaporation, plasma, and Bose-Einstein Condensate.
Revision Notes of Chapter 2 Is Matter Around Us Pure
Anything which occuples space and has mass is known as matter. The crucial notes cover topics such as mixture and Its types, solutions, its properties, suspension and properties, colloidal solution and properties and physical and chemical changes. It also explains the types of pure substances and the differences between mixtures and compounds.
Revision Notes of Chapter 3 Atoms and Molecules
These notes Icover the prominent topics as laws of chemical combination, Dalton's Atomic Theory, Molecules, Atoms, and its elements. It also explains Atomicity, Molecular Mass, lons, Mole concept, chemical formulae, its characteristics, and rules to write chemical formulas.
Revision Notes of Chapter 4 Structure of the Atom
These notes explain the discovery of electrons, neutrons, and protons along with their facts in a detailed way. It covers Thomson and Rutherford's Atomic models and. their observations, conclusions, features, and drawbacks. It further focuses on assumptions made by Neil Bohr, atomic and mass number, Isotopes, and its uses.
Revision Notes of Chapter 5 The Fundamental Unit of Life
The cell is known to be the basic structural, functional, and biological unit of all living organisms. These crucial notes cover the cell theory, types of organisms, types of cells, key differences between animal cells and plant cells, diffusion and osmosis. It also explains hypotonic, hypertonic and Isotonic solutions, plasma membrane or cell membrane, its properties, its functions, cell wall and its function, plasmolysis, nucleus, its composition, Its functions and related topics.
Revision Notes of Chapter 6- Tissues
These notes cover both plant and animal tissues, their features and classification, primary and secondary meristematic tissues apical, intercalary, and lateral meristem. It also highlights permanent tissue concepts, the difference between parenchyma, collenchyma, and sclerenchyma, complex permanent tissues, xylem and phloem.
Chapter 7- Diversity in Living Organisms
Our Notes of Science Class 9 covers taxonomy, its classification, types of cellular organization, body organization, mode of obtaining food, and five kingdom classification. It elaborates the kingdoms Monera, Protista, Fungi, Plantae, Animalia, along with a lot more related concepts in a comprehensive manner.
Revision Notes of Chapter 8 Motion
The vital notes elaborate on distance and displacement, uniform and non-uniform. motion, speed, velocity, and accelerated and decelerated motion. It also explains the equation of motion with a graphical representation of motion and uniform circular motion.
Revision Notes of Chapter 9 Force and Laws of Motion
These notes explain the concept of force, its effects, balanced and unbalanced force, laws of motion, and Newton's laws of motion. It further offers a detailed explanation of mass and Inertia, momentum and mass, Its unit along with numerical problems for practice. The notes also explain the second law of motion and the third law of motion..
Revision Notes of Chapter 10 Gravitation
The crucial notes explain Newton's universal law of gravitation, mass, weight, and difference between mass and weight. The notes further explain thrust and pressure, buoyancy, density, Archimedes principle, relative dentistry, and provide solved numerical problems.
Revision Notes of Chapter 11- Work, Power and Energy
The notes talk about work, a condition when the work should be and when not, its unit, along with positive, negative, and zero work. The notes also elaborate on energy, Its types, the law of conservation energy, power, a commercial unit of power and provide solved. numericals.
Revision Notes of Chapter 12 - Sound
The notes elaborate production and propagation of sound, sound waves as longitudinal waves, its characteristics, wavelength, frequency, time period, amplitude, and velocity. Various other concepts of the speed of sound in multiple mediums, sonic boom, echo, a reflection of sound, range of hearing, application of ultrasound, sonar, and structure of the human ear are also explained.
Revision Notes of Chapter 13 Why do we Fall ill
These vital notes. explain why health is essential and how humans can fall Ill. The difference between healthy and disease free is highlighted in the notes. Various types of diseases, microorganisms, and antibiotics have also been discussed. The notes also explain ways to control the spread of infectious diseases such as AIDS, Its causes and preventions, the principle of treatment, and a lot more.
Revision Notes of Chapter 14 - Natural Resources
The notes focus on natural resources acquired from the earth. They explain the biosphere, atmosphere, air pollution, its causes, rain, and acid rain. The greenhouse effect, environmental issues led by humans, smog, water pollution, and its causes are also described. These notes further explain soil, soil erosion, and its causes.
Revision Notes of Chapter 15 Improvement in Food Resources
These crucial notes explain the green and white revolution, enhancements made in crop yields, various crop seasons, crop variety and production Improvements, the difference between manures and fertilizers, irrigation, and crop patterns. The notes further cover animal husbandry, pest control, grain storage, diseases in cattle farming, fish production, and beekeeping.