Answer:
(a)SONAR
(b) Sound Navigation And Ranging
(c) Reflection of ultrasonic waves
(d) The other uses of the device are to determine the depth
of sea and to locate under water hills, valleys, submarines, etc.
(e) Palak shows the value of curiosity towards
scientific things. She is curious to know about scientific facts, that's
why she is watching such a programme.
You need to login to perform this action.
You will be redirected in
3 sec