Class 9

Observing Space: Telescopes Class 9 Science Notes Maharashtra State Board From early days, man has been curious about the sun as well as the moon and stars seen in the night sky. Using his boundless imagination, he tried to understand the sky as observed by the naked eye. He noticed that the position of the … Read more

Introduction to Biotechnology Class 9 Science Notes Maharashtra State Board Tissue In the case of amoeba-like unicellular organisms, all functions are performed by organelles of that single cell. However, most of the organisms are multicellular. How are the various processes brought into their body? Groups of cells come together, to perform the various functions of … Read more

Heredity and Variation Class 9 Science Notes Maharashtra State Board Earlier, we have seen great variation within every species in nature. In this chapter, we shall study the factors that give rise to these variations. Inheritance The branch of biology which studies the transfer of characteristics of organisms from one generation to the next, and … Read more

Life Processes in Living Organisms Class 9 Science Notes Maharashtra State Board We have studied how digested food or oxygen inhaled by the lungs is transported to every cell of the human body. The farmer also tries to transport the water from wells or dams through a main channel to every plant. The food absorbed … Read more

Substances in Common Use Class 9 Science Notes Maharashtra State Board We use various substances in day-to-day life. We have previously learned in some detail about a few of them, their uses and constituents, and the method of their preparation. Important Salts in Daily Life The ionic compounds that do not contain H+ and OH– … Read more

Carbon: An Important Element Class 9 Science Notes Maharashtra State Board Carbon The element carbon is available abundantly in nature and occurs in free as well as in the combined state. In this chapter, let us study the properties of the non-metallic element carbon. Symbol of carbon – C Atomic number – 6 Atomic mass … Read more

Study of Sound Class 9 Science Notes Maharashtra State Board Sound is a form of energy that creates the sensation of hearing in our ears. This energy is in the form of waves. A medium is necessary for the propagation of sound waves. Sound waves give rise to a chain of compression (place of higher … Read more

Reflection of Light Class 9 Science Notes Maharashtra State Board Light is an agent which gives us information about what is happening in our surroundings. We can enjoy various wonders of nature like the sunrise, sunset, and rainbow only because there is light. Only because of light can we see the lush green vegetation, colourful … Read more

Information Communication Technology (ICT) Class 9 Science Notes Maharashtra State Board The term Information Communication Technology (ICT) includes communication devices and the use of those devices as well as the services provided with their help. The store of information generated due to the advances in science and technology is increasing at a tremendous rate. If … Read more