Science Class 9 Concepts notes

  • CBSE Class 9 Science Wave Motion And Sound Notes

    WAVE MOTION AND SOUND NATUR OF SOUND Sound is a form of energy which effects our sensation of hearing through the ear. The sensation is produced by longitudinal waves in an elastic medium, where the vibrations (oscillations) of the particles are in the same direction in which the wave propagates....

  • CBSE Class 9 Science Work Energy And Power Notes Set B

    WORK, ENERGY AND POWER INTRODUCTION In everyday language, the word work is used to describe any activity in which muscular or mental effort is exerted. In physical, the word work has a special meaning. Work in one done when the force acting on body produced motion in it in the direction of force (...

  • CBSE Class 9 Science Gravitation And Fluid Notes Set B

    GRAVITATION AND FLUID INTRODUCTION Besides developing the three laws of motion, Sir lssac Newton also examined the motion of the heavenly bodes - the planets and the moon. Newton recognized that a force of some kind must be acting on the planets to keep them in nearly circular orbits, otherwise...

  • CBSE Class 9 Science Force And Laws Of Motion Notes Set B

    FORCE AND LAWS OF MOTION FORCE Consider a ball kept on a table, we can move it by pulling or pushing. We can increase its speed by pushing it in the direction of motion. If we push it opposite to the direction of motion its speed will decrease. If the ball is in motion towards east, we push it...

  • CBSE Class 9 Science Physical Science Notes

    PHYSICAL SCIENCE This science deals with the properties and Behaviour of nonliving things. (a) Physics (in Greek Nature): It is the branch of science which deals with the study of the natural laws and their manifestation in the natural phenomenon. Mechanics (oldest branch): If deals with the...

CBSE Class 9 Science Wave Motion And Sound Notes

WAVE MOTION AND SOUND

NATUR OF SOUND

 


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CBSE Class 9 Science Work Energy And Power Notes Set B

WORK, ENERGY AND POWER

INTRODUCTION

 


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CBSE Class 9 Science Gravitation And Fluid Notes Set B

GRAVITATION AND FLUID

INTRODUCTION

 


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CBSE Class 9 Science Force And Laws Of Motion Notes Set B

FORCE AND LAWS OF MOTION

FORCE

 


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CBSE Class 9 Science Physical Science Notes

PHYSICAL SCIENCE

 


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CBSE Class 9 Science Structure Of Atom Notes Set B

STRUCTURE OF ATOM

INTRODUCTION

 


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CBSE Class 9 Science Atoms And Molecules Notes Set B

ATOMS AND MOLECULES

INTRODUCTION

 


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CBSE Class 9 Science Is Matter Around Us Pure Notes Set B

IS MATTER AROUND US PURE

PURE SUBSTANCE

 


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CBSE Class 9 Science Matter In Our Surroundings Notes Set B

MATTER IN OUR SURROUNDINGS

INTRODUCTION

 


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CBSE Class 9 Science Improvement In Food Resources Notes Set B

IMPROVEMENT IN FOOD RESOURCES

INTRODUCTION

 


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Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

CBSE Decision on Board Exam 2020

The Class 10 and 12 exams are cancelled, and results for both 10th and 12th would be declared by July 15 based on internal exams. CBSE Class 12 students would have the option to appear for the exams at a later date. CBSE has a scheme in which marks scored in past 3...

Checking of Boards Answer sheets starts today

CBSE has instructed almost 3000 schools to start the evaluation work for class 10th and class 12th board exam answer sheets from today. The checking of answer sheets for class 10th and class 12th was stopped earlier due to covid crisis in the country. Now in order to...

CBSE Board Exams in July Press Release

CBSE has released press note for the dates for the CBSE Board exams for Class 10. CBSE said “With regards to conduct of Class X examinations several queries are being received by the CBSE. In this context, it is once again reiterated that remaining examinations of...

Board Exams helpline by CBSE

According to the recent announcement of CBSE, the pending Class 10 and 12 Board exams are going to be held from 01 July to 15 July 2020 in India. Along with this, it has also been decided to resume the free of cost tele-counseling service for students from 9.30 am to 5...

CBSE Online Training for Teachers 2020

It is clear that this pandemic has utterly disrupted an education system that many assert was already losing its relevance. Enhancing professional development digitally is a need in the times of COVID-19, where social distancing and remote interactions is the new...

TV Channels for Students by CBSE

In enhancing the students studying part, the Government is planning to introduce one standard one channel plan. The lockdown in India has adversely collapsed all the operations including schools, colleges, and workplaces with unanticipated setbacks. On behalf of the...

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