Bottlenose dolphins (Figure 1) use echolocation pulses with a frequency of about

Question

Bottlenose dolphins (Figure 1) use echolocation pulses with a frequency of about 100 kHz, higher than the frequencies used by most bats. Why might you expect these water-dwelling creatures to use higher echolocation frequencies than bats? Drag the terms on the left to the appropriate blanks on the right to complete the sentences. The speed of sound in water is greater than in air: hence for the same frequency the sound wavelength in water is than in air (for the given frequency the wavelength is in the proportion with the speed of sound). To "see" an object via the echolocation creature needs to use sound with the wavelength than the size of an object viewed. That means to "see" objects of the same size dolphin and bat need to use ultrasound of the same wavelength, hence dolphin needs to use higher frequency (for the given speed of sound the wavelength is in proportion with the frequency).

Explanation / Answer

Relation between speed of sound, frequency and wavelength is

v = f

as we know that frequency of sound doesnt change when medium changes so if speed of sound in water is greater as compare to air so wavelength will also be greater as compare to air as wavelegth is direct proportion with the speed.

To see the object via the echolocation creature needs to use sound with wavelength smaller than the size of an object viewed.

here dolphin needs to use higher frequency ( for the gicen speed of sound the wavelgth is in inverse proportion with the frequency.

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.