Sound

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Distance = Speed × Time ÷ 2 Distance = 340 × 2 ÷ 2 = 340 m We divide by 2 because sound travels to the cliff and back, so total distance is twice the cliff distance.

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Sound travels faster in solids because particles are more closely packed and strongly bonded. This allows vibrations to transfer more quickly from one particle to another. Sound speed in iron (5120 m/

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When struck, the tuning fork vibrates at a specific frequency. The vibrating prongs create compressions and rarefactions in air, producing sound waves that travel to your ear. You hear a clear musical

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Speed = Frequency × Wavelength v = ν × λ v = 500 Hz × 0.68 m = 340 m/s This is the speed of sound in air at room temperature.

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Sound needs a medium (solid, liquid, or gas) to travel because it propagates through vibrations of particles. Space is a vacuum with no air or matter, so sound waves cannot propagate. Astronauts commu

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A stethoscope uses multiple reflection of sound. The chest piece picks up heart/lung sounds, which travel through the hollow tubes by repeated reflections. This concentrates and amplifies the sound, a

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Compression: Region where air particles are pushed together, creating higher density and pressure. Rarefaction: Region where air particles are spread apart, creating lower density and pressure. These

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Ocean depth = Speed × Time ÷ 2 Depth = 1500 × 4 ÷ 2 = 3000 m = 3 km We divide by 2 because SONAR measures round-trip time (down to ocean floor and back up).