Science Notes
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UNIVERSE Notes 9th Science Lesson 12 Notes in English
UNIVERSE Introduction In the earlier days, before the invention of astronomical instruments, people thought that Earth is the centre of…
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CHEMICAL BONDING Notes 9th Science Lesson 11 Notes in English
CHEMICAL BONDING Introduction We already know that atoms are the building blocks of matter. Under normal conditions no atom exists…
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PERIODIC CLASSIFICATION OF ELEMENTS Notes 9th Science Lesson 10 Notes in English
PERIODIC CLASSIFICATION OF ELEMENTS Introduction We live in the world of substances with great diversity. Substances are formed by the…
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MATTER AROUND US Notes 9th Science Lesson 9 Notes in English
MATTER AROUND US Introduction We use the term matter to cover all substances and materials from which the universe is…
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ATOMIC STRUCTURE Notes 9th Science Lesson 8 Notes in English
ATOMIC STRUCTURE Introduction Just as a small child wants to take a toy apart to find out what is inside,…
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Heat Notes 9th Science Lesson 7 Notes in English
Heat Notes 9th Science Lesson 7 Notes in English Introduction All substances in our surrounding are made up of molecules.…
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Sound Notes 9th Science Lesson 6 Notes in English
Sound Notes 9th Science Lesson 6 Notes in English Introduction Sound is a form of energy which produces sensation of…
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Magnetism and Electromagnetism Notes 9th Science Lesson 5 Notes in English
Magnetism and Electromagnetism Notes 9th Science Lesson 5 Notes in English Introduction Have you ever played with magnets? Do you…
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Light Notes 9th Science Lesson 4 Notes in English
Light Notes 9th Science Lesson 4 Notes in English Introduction Light is a form of energy which travels as electromagnetic…
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Fluids Notes 9th Science Lesson 3 Notes in English
Fluids Notes 9th Science Lesson 3 Notes in English Introduction A small iron nail sinks in water, whereas a huge…
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