DMS 101
Liberty University
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DMS-101 Exam 1 (ALL) | 224 Questions with 100% Correct Answers
- Exam (elaborations) • 13 pages • 2022
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What is sound? - A wave which is created by vibrating objects and propagated 
through a medium from one location to another 
Can sound travel in a vacuum? - No 
What is ultrasound? - Sound that has a frequency beyond the limits of perception by 
the human ear 
What is the range of human hearing? - 20 Hz-20,000 Hz 
What is the range of infrasound? - <20 Hz 
What is the range of ultrasound? - >20,000 Hz 
What is echolocation? - The use of ultrasound at various frequencies to locate and 
iden...
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