Class 7 Science MCQs - Chapter 23
Sound Waves Multiple Choice Questions (MCQ) PDF Download - 26
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The Sound waves Multiple Choice Questions (MCQ Quiz) with Answers PDF, DownloadSound Waves MCQ PDF e-Book Ch. 23-26 to learn Grade 7 Science Course. Study Sound Waves and Echoes Multiple Choice Questions and Answers (MCQs) PDF, Sound Waves Quiz Questions and Answers to study online certificate courses. The Sound Waves MCQ App Download: Free Grade 7 Science Learning App for sound waves and echoes, waves of energy, frequency and pitch, speed of sound, vibrations and sound waves test prep for online degrees.
The MCQs: 'Dolphins' can capture their prey using; "Sound Waves" App (Android, iOS) with answers: infrasound, echo, eye sight, and ears and sensors to study online certificate courses. Practice Sound Waves and Echoes MCQ Questions, download Apple e-Book (Free Sample) for distance learning.
Sound Waves MCQs with Answers PDF Download: Quiz 26
'Dolphins' can capture their prey using
- echo
- infrasound
- eye sight
- ears and sensors
When sound travels, the air molecules vibrate
- parallel to the sound direction
- perpendicular to the sound direction
- opposite to the sound direction
- in the direction of the sound
The highest level of frequency which human ear can detect is
- 2 Hz
- 20 Hz
- 20kHz
- 2kHz
Sound travels fastest in
- gases
- liquids
- solids
- space
A hand bell stimulates the
- movement of air particles
- collision of air particles
- vibration of air particles
- energy of air particles
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