Complete Explanation of CBSE Notes
Free PDF download of CBSE Class 9 Social Science Syllabus as per NCERT guidelines. To register online tuitions on LearnCBSE to clear doubts and download the complete Revision Notes for Class 9 Social Science Notes to prepare for your Examinations.
All the waste materials and other household waste produced on a daily basis are termed as the garbage. The different wastes of garbage contain peels of vegetable and fruits, leftovers cooked food products, waste paper, and plastic materials, and many other waste items. Please refer Garbage In Garbage Out Class 6 Notes for more revision notes.
Air is present all around us. We can feel the presence of air but cannot see the air around us. Air is a mixture of gases. The different components of air includes – 78% nitrogen, 21% oxygen, 0.9% argon, 0.04% carbon dioxide, and about 1% water vapour. Air plays an important role in breathing and burning. The existence of life on the planet earth is mainly because of the presence of air. Please refer Air Around Us Class 6 Notes for more revision notes.
Water can be simply defined as the natural, precious and essential requirement of life. Water is found abundantly on our planet earth. About two-thirds of the total earth’s surface is covered with water. Please refer Water Class 6 Notes for more revision notes.
A magnet was discovered by an ancient Greek shepherd named Magnes. Therefore, this naturally occurring mineral – magnet was named by the discover’s name. The magnets, obtained naturally from a Magnetite rock, are called as the natural magnets and those magnets prepared by the combination of certain mineral ores are called as the artificial magnets. Please refer Fun with Magnets Class 6 Notes for more revision notes.
An electric circuit is defined as the closed surface or a path through which the electric current flows. In an electric circuit, current flows from the positive terminal to the negative terminal. A simple electric circuitcomprises of the power source, conductors, switch and load.
An electric switch is a device or a component that is used to break an electrical circuit, either by interrupting the flow of current or by diverting the flow of current from one conductor to another. Please refer Electricity and Circuits Class 6 Notes for more revision notes.
Light can be defined as the form of energy which helps us in seeing objects. Basically, when the light rays fall on an object, some of the rays are reflected in our eyes and it makes us see an object. Based on the emission of lights, objects are divided into luminous and non-luminous objects. Please refer Light Shadows and Reflection Class 6 Notes for more revision notes.
An organism which consists of life, and possesses certain specific features and habits are called as the Living Organisms. All living organisms eat, respire, grow, move, reproduce, excrete and respond. Humans, animals, microbes, plants, birds, insects, are all examples of Living things or Organisms. Please refer The Living Organisms and Their Surroundings Class 6 Notes for more revision notes.
A movement is defined as a change in the position of a body. Many movements take place in our body and in other organisms to move from one place to another. The term locomotion is mainly used to describe the change of position of the whole organism. Moving our eyelids, rotating our neck, nodding our head, moving the jaw muscles are examples of different movements in the human body. Please refer Body Movements Class 6 Notes for more revision notes.
CBSE Revision Notes