An oceanographer uses an underwater sonar transducer to detect obstructions. This creates an acoustic (sound) wave in the seawater.
The frequency of the acoustic wave is 12.5 kHz12.5\text{ kHz}12.5 kHz. The speed of sound in seawater is 1500 m/s1500\text{ m/s}1500 m/s.
Calculate the wavelength of the acoustic wave. Use the equation: $\text{wave speed} = \text{frequency} \times \text{wavelength}$
Explain how this acoustic wave travels through seawater from the transducer. Write about water particles in your answer.
The figure below is a graph plot representing this acoustic wave:
Another acoustic wave has a lower frequency. The amplitude of the wave remains the same.
Describe how the wavelength and amplitude of this second wave compare to the first wave shown on the graph.