Harbor seals, like many animals, determine the direction from which a sound is c

Question

Harbor seals, like many animals, determine the direction from which a sound is coming by sensing the difference in arrival times at their two ears. A small difference in arrival times means that the object is in front of the seal: a larger difference means it is to the left or right. There is a minimum time difference that a seal can sense, and this leads to a limitation on a seal's direction sense. Seals can distinguish between two sounds that come from directions 3 degree apart in air. but this increases to 9 degree in water. Explain why you would expect a seal's directional discrimination to be worse in water than in air. Drag the terms on the left to the appropriate blanks on the right to complete the sentences. The sound waves are in water than in air, so the difference in arrival times of the sound in the two ears will be : and there is a minimum time difference the seal can sense. This means the directional discrimination is in water where the sound is than in air.

Explanation / Answer

the sound waves are FASTER in water then in air, so the difference in arrival times of the sound in the two ears will be SMALLER; and there is a minimum time difefrence the seal can sense.

This means the directional discrimiation is WORSE in water where the sound is FASTER than in air

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