Final answer:
When the wavelength of a water wave decreases, its velocity stays the same.
Step-by-step explanation:
When the wavelength of a water wave decreases, its velocity stays the same. The velocity of a wave is determined by the properties of the medium through which the wave is traveling. In the case of water waves, the velocity depends on the depth of the water and not the wavelength. So, changing the wavelength of a water wave does not affect its velocity.
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