Study Notes for Class 9 Science Chapter 8 Motion Topics to be covered: What is motion? Describing motion of a particle Position, path length and displacement Speed and Velocity Rate of change of velocity Distance-time graph Velocity-time graph Equations of Motion Uniform Circular Motion What is motion? State of Rest: An object is said to … Read more
CBSE Study Notes for Class 9 Science are provided for the students to help them in their preparation. Study Notes for CBSE Class 9 Science Class 9 Science study notes are given here. Students can click on the links of the particular chapter for which they are finding the notes. Chapter 1 Matter in Our Surroundings Chapter … Read more
CBSE Class 9 Science Chapter 5 Fundamental Unit of Life: Cell NCERT Solution Main topics covered in this part of CBSE Class 9 Science, The Fundamental Unit of Life: Study Notes, are: Definition of Cell Shape and Size of Cell Types of Cell Structure of Cell Cell Organelles Difference Between Animal Cell and Plant Cell … Read more
Study Notes for CBSE Class 9 Science Chapter 2 Is Matter Around Us Pure ‘Pure’ word means that there is no mixing in a substance. But according to scientific language all things are mixture of so many substances, not of single one. That’s why they are not pure. e.g., Milk, water, fat, etc. • Pure … Read more
MatterThe matter is the material of which everything in this universe, in and around us is made up of in different shapes. It is anything that occupies space and has mass and offers resistance to any applied force.Physical Nature of Particles :Matter is made up of particles. The particles of matter are very-very small. Characteristics … Read more
Sound (i) The sensation felt by our ears is called sound. (ii) Sound is a form of energy which makes us hear. (iii) Law of conservation of energy is also applicable to sound. (iv) Sound travels in form of wave. Production of Sound Sound is produced when object vibrates or sound is produced by vibrating … Read more
Work For doing work, energy is required. • In animals, energy is supplied by food they eat. • In machine, energy is supplied by fuel. Not much work inspite of working hard : Reading, writing, drawing, thinking, analysing are all energy consuming. But in scientific manner, no work is done in above … Read more
Sound Important Notes 1. Sound is a mechanical energy which produces sensation of hearing. 2. For hearing sound there must be (i) a vibrating body, … Read more
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 earth is known as gravitational force of the earth. Here, … Read more
Study Notes for CBSE Class 9 Science Chapter 9 Force and Laws of Motion Forces and Laws of Motion : 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, … Read more
Facts that Matter Heredity is the transmission of characters or traits from the parents to their offspring. Variation is the difference in the characters or traits among the individuals of a species. Accumulation of Variations Sexual reproduction of organisms produces variations. The variations produced in organisms during successive generations get accumulated in the organisms. … Read more
