Question 1064Navigation General70% to pass
Swell is the rise and fall of the ocean's surface due to _______________.
AI Explanation
The correct answer is D) distant winds.
Swell is the rise and fall of the ocean's surface caused by distant winds. As winds blow across the ocean's surface, they create waves that continue to propagate even after the local wind has subsided. These propagating waves are known as swell. Swell is distinct from waves generated by local storms (option B) or the gravitational pull of the moon (option C), which create different patterns of wave action. Fetch (option A) refers to the distance over which the wind blows to generate waves, but it is not the direct cause of swell itself.
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