Physics Midterm Word Scramble
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Term | Definition |
What is the literal meaning of Sonography? | writing with sound |
What two things must a transducer know to create an image? | location(origin) and strength of returning echoes |
Brightness is determined by ___? | echo strength |
Location is determined by? | direction of travel, distance from transducer, and time for round trip travel(time=propagation speed) |
propagation speed | how fast sound travels through a medium |
Doppler effect | change in frequency of sound wave |
Sound is a _____, _____, _____ wave. | mechanical, longitudinal, compressional |
Longitudinal vs transverse waves | Longitudinal=parallel Transverse=perpendicular |
Compression | areas of high pressure (max) |
Rarefaction | areas of low pressure (min) |
Properties of a mechanical wave | Must travel though matter, cannot go through a vacuum, carries energy and inofrmation |
Describes how many complete cycles occur in one second | Frequency (Hertz); Typical Diagnostic range: 2-10MHz |
Created by:
tatheerr
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