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Answer:
1. Pitch is the frequency of a sound wave, which determines how high or low a sound is. Intensity is the amount of energy in a sound wave, which determines how loud or soft a sound is. Loudness is the subjective perception of the intensity of a sound, which can vary from person to person.
2. Pitch and wavelength are inversely related; as pitch increases, wavelength decreases and vice versa.
3. Loudness differs with the person because it is based on their subjective perception of intensity.
4. As an ambulance approaches and passes you, it produces a sound that increases in pitch and loudness as it gets closer and then decreases in pitch and loudness as it passes by. This is due to the Doppler effect, which causes an increase in frequency when an object approaches and a decrease in frequency when an object moves away from you.
5. Ways to protect human ear from noise pollution include wearing earplugs or earmuffs when exposed to loud noises, avoiding exposure to loud noises for extended periods of time, and limiting exposure to very loud noises such as concerts or sporting events.
Explanation:
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