Ultrasound vs Normal Waves for Sea Depth Measurement: Why Ultrasound is Superior

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SUMMARY

Ultrasound is superior to normal waves for sea depth measurement due to its smaller wavelength, which results in less diffraction and more concentrated energy on the seabed. The discussion highlights that ultrasound waves maintain amplitude more effectively than ordinary waves, leading to greater accuracy and responsiveness in depth measurements. Additionally, ultrasound can travel further in water compared to normal waves, making it a more reliable tool for underwater exploration.

PREREQUISITES
  • Understanding of wave properties, specifically wavelength and amplitude.
  • Knowledge of sound wave behavior in different mediums, particularly water.
  • Familiarity with the principles of sonar technology.
  • Basic concepts of diffraction and its effects on wave propagation.
NEXT STEPS
  • Research the principles of sonar technology and its applications in marine exploration.
  • Study the physics of wave propagation in different mediums, focusing on water.
  • Learn about the limitations of ordinary waves in underwater measurements.
  • Explore advancements in ultrasound technology for depth measurement and imaging.
USEFUL FOR

Marine scientists, oceanographers, and engineers involved in underwater exploration and measurement techniques will benefit from this discussion.

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Homework Statement


Waves with small wavelengths diffract less than those with longer wavelengths. Use this information to suggest why ultrasound is much better than ordinary waves for finding the depth of the sea [3 marks]

Homework Equations


NONE

The Attempt at a Solution


Ultrasound has a smaller wavelength than normal waves - hence wave is more concentrated on sea bed.

4. Problems

The mark scheme includes the following two, extra, factors
- amplitude decreases rapidly
- range limited / cannot travel far.

I presume that the last to factors refer to ordinary wavesIs this next sentences correct:
"the amplitude (energy) of an ultrasound wave decreases less rapidly than that of a normal wave - hence results will be more accurate and more responsive. Furthermore, ultrasound can travel further in water than normal waves"
 
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