Toothed whales can use sound waves to detect objects around them using echolocation.
(1) Outline what is meant by the term *echolocation*.
(2) Suppose a whale emits a sound wave of frequency 120 kHz, which travels through the ocean at a speed of 1.4 kms−1 .
i** What is the wavelength of the sound wave emitted by the whale?
ii** If the whale hears an echo 0.3 s after it has emitted the sound wave, how far away is the object it is locating?
iii** Will the whale be able to detect a squid of length 20 cm at this distance? Explain your answer.