Advertisements
Advertisements
Question
Define the following terms : (a) Echolocation (b) Echocardiography, and (c) Ultrasonography.
Advertisements
Solution
(i) Echolocation: It is the method used by some animals to locate the objects by hearing the echoes of their ultrasonic squeaks. This method is used by bats and dolphins in finding their way and detecting their prey.
(ii) Echocardiography is a method used to investigate the action of the heart by using ultrasound waves.
(iii) Ultrasonography is a technique of obtaining pictures of internal organs of the body by using echoes of ultrasound pulses.
APPEARS IN
RELATED QUESTIONS
A submarine emits a sonar pulse, which returns from an underwater cliff in 1.02 s. If the speed of sound in salt water is 1531 m/s, how far away is the cliff?
Explain how bats use ultrasound to catch a prey.
How is ultrasound used for cleaning?
How is an ultrasound scan for fetus (unborn baby) better than X-ray ?
What happens to the pitch of a sound if its frequency increases ?
Give one use of ultrasound in industry and one in hospitals.
Explain how, bats use ultrasound to catch the prey.
The ultrasound waves can penetrate into matter to a large extent because they have :
Explain how does SONAR work?
Expand the abbreviation of the term SONAR.
