Class 7 Science Online Tests
Sound Waves and Echoes MCQ (Multiple Choice Questions) PDF Download
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The MCQ: The use of echo to measure distance is known as; "Sound Waves and Echoes" App Download (Free) with answers: Echo destination; Echolocation; Echo displacement; Echo dictation; to learn online classes courses. Solve Sound Waves Quiz Questions, download Apple eBook (Free Sample) for elementary school graduation certificate.
Sound Waves and Echoes MCQs: Questions and Answers PDF Download
As compare to humans, bats can hear sounds only with
- low frequency
- low pitch
- low amplitude
- high pitch
The use of echo to measure distance is known as
- echo destination
- echolocation
- echo displacement
- echo dictation
Some fishing boats use echo to
- calculate the depth of water
- detect any predator
- detect shoal of fish
- eggs of fish
Ships send a small
- pulse to the sea bed
- vibration to the tower
- piece of food to fish
- beam of sound to check the depth
The longer, the echo takes, the
- shallower the water
- the deeper the water
- the denser the water
- the warmer the water
Class 7 Science Practice Tests
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