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प्रश्न
Name an animal which navigates and finds food by ecolocation.
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उत्तर
Bats navigate and find their food by echolocation. They produce echoes by their ultrasonic squeaks.
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संबंधित प्रश्न
Give two practical applications of reflection of sound waves.
Fill in the blank with suitable word .
Sound waves are caused by ...................
Name the characteristic of sound which depends on (a) amplitude (b) frequency, and (c) waveform.
What is the name of the device which is used to find the depth of sea (or ocean) by using ultrasonic sound waves ?
What name is given to sound waves of frequencies higher than 20 kHz ?
What is meant by the 'loudness' of sound ? On what factor does the loudness of a sound depend ?
What is meant by the quality (or timbre) of sound ? On what factor does the quality (or timbre) of a sound depend ?
Explain why, if we strike a table lightly, we hear a soft sound but if we hit the table hard, a loud sound is heard.
What is the range of frequencies associated with (a) infrasound (b) audible sound, and (c) ultrasound ?
Fill in the blank and explain.
To discover a sunken ship or objects deep inside the sea, ______ technology is used.
