Porpoises and Some Bats Find Their Prey Using Sound Waves

Question

Porpoises and some bats find their prey using sound waves in the _________range.  
A) supersonic
B) infrasonic
C) ultrasonic
D) high-pitched, human ear-audible
E) low-pitched, human ear-audible

Accepted Answer

Dolphins, porpoises, and some bats use echolocation to locate prey. They emit high-frequency sound waves that bounce off of objects around them and return to their ears, allowing them to form a sonic map of their environment. These sound waves are in the ultrasonic range, meaning they are above the range of human hearing. Therefore, choice C, ultrasonic, is the correct answer.