Advertisements
Advertisements
Question
How is it that bats are able to fly at night without colliding with other objects ?
Advertisements
Solution
Bats are able to fly at night without colliding with other objects because they emit ultrasonic squeaks and listen to the echoes produced by the reflection of their squeaks from the objects or obstacles in their path. Bats can judge the distance of the object in their path and avoid it by changing the direction using the time taken by the echo to be heard after reflection from the obstacle.
APPEARS IN
RELATED QUESTIONS
A sonar device on a submarine sends out a signal and receives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the submarine is 3625 m.
Explain the term 'amplitude' of a wave. Draw the diagram of a wave and mark its amplitude on it.
Name the characteristic which helps us distinguish between a man's voice and a woman's voice, even without seeing them.
What type of scans are used these days to monitor the growth of developing baby in the uterus of the mother ?
Draw labelled diagrams to represent sound of (a) low pitch, and (b) high pitch, of the same loudness.
Give one use of ultrasound in industry and one in hospitals.
Explain how, bats use ultrasound to catch the prey.
Which of the two produces ultrasonic waves : porpoise or whale ?
Explain how does SONAR work?
Expand the abbreviation of the term SONAR.
