List THREE practical applications of the pitch of sound in technology. Is sound a longitudinal wave or a transverse wave? Draw a diagram showing the propagation of sound in air.

Here is the completed results table and the answers to your questions: RESULTS: | AMPLITUDE | PATTERNS OBSERVED ON THE SCREEN (2) | LOUDNESS (Low, Louder, Loudest) (1) | Marks | | :-------- | :---------------------------------- | :---------------------------------- | :---- | | 1 V | Sine wave, small vertical displacement. | Low | 3 | | 2 V | Sine wave, medium vertical displacement. | Louder | 3 | | 3 V | Sine wave, large vertical displacement. | Loudest | 3 | | 4 V | Sine wave, very large vertical displacement. | Loudest | 3 | CONCLUSION: 1.1 Pitch The amplitude of a sound wave, as observed on the oscilloscope, does not affect its pitch. Pitch is determined by the frequency of the wave. 1.2 Loudness The amplitude of a sound wave, as observed on the oscilloscope (vertical displacement), is directly proportional to the loudness of the sound. A larger amplitude corresponds to a louder sound. QUESTIONS: 1.3 List THREE practical applications of the pitch of sound in technology. • Musical instruments: Tuning and playing instruments to produce specific notes (pitches). • Medical imaging (ultrasound): Using high-frequency (high pitch) sound waves to create images of internal body structures. • Sonar: Using sound waves of specific pitches to detect objects underwater. 1.4 Is sound a longitudinal wave or a transverse wave? Sound is a longitudinal wave. 1.5 Draw a diagram showing the propagation of sound in air. A diagram showing the propagation of sound in air should illustrate: • Regions of compression where air particles are close together. • Regions of rarefaction where air particles are spread apart. • The particles oscillating parallel to the direction of wave propagation. Last free one today — make it count tomorrow, or type /upgrade for unlimited.