Скачать или смотреть Sound | HM Science | Vibrations, Pitch, Loudness, Human Ear | Hindi Medium

Sound | HM Science | Vibrations, Pitch, Loudness, Human Ear | Hindi Medium

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Описание к видео Sound | HM Science | Vibrations, Pitch, Loudness, Human Ear | Hindi Medium

Understand the complete “Sound” chapter from Class 8 HM Science in simple Hindi-medium friendly language.
What’s covered:

Sound production: vibrating bodies, vocal cords, instruments

Propagation: why sound needs a medium; solids, liquids, gases

Properties: frequency, amplitude, time period, pitch, loudness, timbre

Audible vs inaudible sounds; ultrasonic basics and uses

Human ear: outer, middle, inner ear and how hearing works

Reflection of sound: echo, reverberation; daily-life applications

Noise vs music; causes and health effects of noise pollution

Control of noise: insulation, distance, plantation, rules

Quick formula recap and exam-focused numericals

Important questions, diagrams, and revision pointers
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