You call to a friend from a boat floating in the ocean. Which best describes the changes in the speed of the sound waves as they move from you to below the surface of the ocean?
The speed increases as the sound moves from the boat, and then decreases as the sound moves from the boat to the water.
The speed decreases as the sound moves from the boat, and then decreases again as the sound moves from the boat to the water.
The speed increases as the sound moves from the boat, and then increases again as the sound moves from the boat to the water.
The speed decreases as the sound moves from the boat, and then increases as the sound moves from the boat to the water.
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