Class 7 Science MCQs - Chapter 23
Sound Waves Multiple Choice Questions (MCQ) PDF Download - 10
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The Sound waves Multiple Choice Questions (MCQ Quiz) with Answers PDF (Sound Waves MCQ PDF e-Book) download Ch. 23-10 to learn Grade 7 Science Course. Study Ultrasound Multiple Choice Questions and Answers (MCQs) PDF, Sound Waves Quiz Questions and Answers to study online certification courses. The Sound Waves MCQ App Download: Free educational app for ultrasound, sound and vacuum, sound waves and echoes, all around sounds test prep for online school classes.
The MCQs: A strong beam of ultrasound can melt even a; "Sound Waves" App (Android, iOS) with answers: Metal; Glass; Soap; Wax; to study online certification courses. Practice Ultrasound MCQ Questions, download Apple e-Book (Free Sample) for online degrees.
Sound Waves MCQs with Answers PDF Download: Quiz 10
A strong beam of ultrasound can melt even a
- glass
- metal
- soap
- wax
Sound can travel through air because
- air has pressure
- air has humidity
- air has particles
- air has temperature
Some fishing boats use echo to
- calculate the depth of water
- detect any predator
- detect shoal of fish
- eggs of fish
Most of the sounds around world are
- artificial
- natural
- man made
- made electronically
X-rays are only reflected by
- soft surfaces
- thick surfaces
- thin surfaces
- hard surfaces
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