Science Class 9 Solutions, MCQ, Notes, Book FREE PDF Download

Notes For All Chapters Science Class 9 Facts that Matter Food supplies proteins, carbohydrates, fats, vitamins and minerals, all of which we require for body development, growth and health. Different crops require different climatic conditions, temperature and photoperiods for their growth and completion of their life cycle. Photoperiods are related to the duration of sunlight. […]

Notes For All Chapters Science Class 9 Facts that Matter Life exists on earth due to its ambient temperature, water, food and energy from the sun. Lithosphere: The outer crust of the earth is called the lithosphere. Hydrosphere: Sum of all water bodies is called hydrosphere. Atmosphere: Air that covers the earth is called the […]

Notes For All Chapters Science Class 9 Facts that Matter Introduction Health is a state of complete physical, mental and social well-being. Basic conditions for good health: Proper balanced and nutritious diet. Personal hygiene. Clean environment and surroundings. Healthy air, no pollution in the surrounding. Regular exercise. Proper rest. Good standard of living and economic […]

Notes For All Chapters Science Class 9 Introduction → The sensation felt by our ears is called sound. → Sound is a form of energy which makes us hear. → Law of conservation of energy is also applicable to sound. → Sound travels in form of wave. Production of Sound → Sound is produced when […]

Notes For All Chapters Science Class 9 Introduction → The energy for the ‘life processes’ comes from food. Activities like playing, singing, reading, writing, thinking, jumping, cycling and running requires energy. Work → For doing work, energy is required. • In animals, energy is supplied by food they eat. • In machine, energy is supplied […]

Notes For All Chapters Science Class 9 Introduction → Gravitational Force of Earth: If we release a small stone without pushing it from a height, it accelerates towards earth. → The stone is when accelerated towards earth, means some force is acting on it. The force which pulls the objects towards the centre of the […]

Notes For All Chapters Science Class 9 Introduction → Force: It is the force that enables us to do any work. To do anything, either we pull or push the object. Therefore, pull or push is called force. Example, to open a door, either we push or pull it. A drawer is pulled to open […]

Notes For All Chapters Science Class 9 Introduction What is motion? State of Rest: An object is said to be in the state of rest if it does not change its position with respect to time and its surroundings. State of Motion: An object is said to be in the state of motion if it […]

Notes For All Chapters Science Class 9 Facts that Matter Diversity: This earth is full of organisms of various shapes and sizes. The largest Phylum of animal kingdom alone contains over a million species. There are varieties of plants, right from small grasses to tall Eucalyptus trees. This variety in living beings is called diversity. Biodiversity: The […]

Notes For All Chapters Science Class 9 Introduction → A group of cells that are similar in structure and/or work together to achieve a particular function forms a tissue. → Most of the tissues in plants are supportive, which provides them with structural strength. → These tissues are dead, since dead cells can provide mechanical […]

Notes For All Chapters Science Class 9 CBSE Introduction • Cell is the structural and functional unit of life. It is the basic unit of life. • It is discovered by Robert Hook in 1831 in cork slice with the help of primitive microscope. • Leeuwenhoek (1674), discovered the free living cells in pond water […]

Notes For All Chapters Science Class 9 CBSE Introduction → John Dalton considered atom to be an indivisible entity, but his concept had to be discarded at the end of nineteenth century, when scientists through experiments were able to find existence of charged (electrons and protons) and neutral particles (neutrons) in the atom. These particles […]

Notes For All Chapters Science Class 9 CBSE  Laws of Chemical Combination :- The chemical reaction between two or more substances giving rise to products is governed by certain laws. These laws are called Laws of Chemical Combination’. Law of Chemical Combination :- Law of Conservation of Mass Law of Constant Proportion Law of Multiple […]

Notes For All Chapters Science Class 9 CBSE MATTERS :- Anything which occupies space and has mass is called matter. Matter can be divided in two categories. ( I ) Pure Substance ( II ) Impure Substances (Mixtures) ( I ) Pure Substance :- Pure substances means that all elements have same chemical properties. A […]

Notes For All Chapters Science Class 9 CBSE Facts that Matter Introduction Everything in this universe is made of materials which scientist has names ‘matter’. The matter is made up of very small tiny particles. It is not continuous but is particulate. The matter is anything that occupies space and has mass. Particles of matter have space […]

MCQ’s For All Chapters – Science Class 9th

MCQ’s For All Chapters – Science Class 9th

MCQ’s For All Chapters – Science Class 9th

MCQ’s For All Chapters – Science Class 9th

Science Syllabus Session 2019-20