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Everyday we hear sounds from various sources like humans, birds, bells, machines, vehicles, televisions, radios etc. Sound is a form of energy which produces a sensation of hearing in our ears. There are also other forms of energy like mechanical energy, heat energy, light energy etc. We have talked about mechanical energy in the previous chapters.
4 lis 2023 · NCERT Class 10 Science Books in English PDF Download. NCERT Class 10 Science Books are provided in PDF form so that students can access it at any time anywhere. Class 10 NCERT Science Books are created by the best professors who are experts in Science and have good knowledge in the subject.
introduction. Sound is a longitudinal, mechanical wave. Sound can travel through any medium, but it cannot travel through a vacuum. There is no sound in outer space. Sound is a variation in pressure. A region of increased pressure on a sound wave is called a compression (or condensation).
The loudness of sound depends on its amplitude. When the amplitude of vibration is large, the sound produced is loud. When the amplitude is small, the sound produced is feeble. Compare the sound of a baby with that of an adult.
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Lesson 1 - The Nature of a Sound Wave. Sound is a Mechanical Wave. Sound as a Longitudinal Wave. Sound is a Pressure Wave. Lesson 2 - Sound Properties and Their Perception. Pitch and Frequency. Intensity and the Decibel Scale. The Speed of Sound. The Human Ear. Lesson 3 Behavior of Sound Waves. Interference and Beats.
23 kwi 2024 · The complete NCERT books for class 10 Science is as follows. Chapter 1: Chemical Reactions and Equations. Chapter 2: Acids, Bases and Salts. Chapter 3: Metals and Non-metals. Chapter 4: Carbon and its Compounds. Chapter 5: Life Processes. Chapter 6: Control and Coordination. Chapter 7: How do Organisms Reproduce? Chapter 8: Heredity and Evolution.
