What is the relationship between the amplitude of a sound wave and its loudness?

What is the relationship between the amplitude of a sound wave and its loudness?

Step 1: Understand what a sound wave is. A sound wave is a vibration that travels through the air (or another medium) and can be heard when it reaches our ears.
Step 2: Learn about amplitude. Amplitude is the height of the sound wave. It measures how much energy the wave has.
Step 3: Know what loudness means. Loudness is how we perceive the strength or intensity of a sound. It is how 'loud' or 'soft' a sound seems to us.
Step 4: Connect amplitude and loudness. When the amplitude of a sound wave is higher, the sound is louder. When the amplitude is lower, the sound is softer.
Step 5: Remember the relationship. The louder the sound, the greater the amplitude of the sound wave. This means they are directly related.

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