DMS 216 EXAM 2 CHAPTERS 6-10
COMPLETE QUESTIONS WITH 100%
VERIFIED ANSWERS
\.sound ______________ as it propagates - ANSWERS✔-weakens
\.as sound waves propagate, they change ______________ - ANSWERS✔-
direction
\.sound is a _______________ and __________________ wave - ANSWERS✔-
longitudinal, mechanical
\.what is the weakening of the soundwave called - ANSWERS✔-attenuation
\.what is the strengthening of a soundwave called - ANSWERS✔-amplification
\.what is the log of a number - ANSWERS✔-the number of 10's multiplied
together to create that number
\.what is the log of 100 - ANSWERS✔-2 (10 x 10)
\.decibel notation is _________________ - ANSWERS✔-logarithmic
,\.decibels report __________ changes - ANSWERS✔-relative
\.what two intensities do decibels require - ANSWERS✔-the reference and the
level at the time of measurement
\.decibels are a __________ - ANSWERS✔-ratio
\.positive decibels report signals that are _______________ in strength or getting
____________ - ANSWERS✔-increasing, larger
\.when a wave's intensity doubles, the relative change is ______________ -
ANSWERS✔-+3 dB
\.when intensity increases ten-fold, the relative change is _______ - ANSWERS✔-
+10 dB
\.what is the 3 dB rule - ANSWERS✔-when a waves intensity doubles the relative
change is +3 Db
\.what do negative decibels describe - ANSWERS✔-attenuation
\.what do positive decibels describe - ANSWERS✔-amplification
, \.dB is a mathematical representation with a _____________ and
______________ scale - ANSWERS✔-logarithmic, relative
\.what two factors is attenuation determined by - ANSWERS✔-path length and
frequency of sound
\.distance and attenuation are _____________ related - ANSWERS✔-directly
\.the longer the sound beam travels, the more it _______________ - ANSWERS✔-
attenuates
\.attenuation is greater in _____________ frequency sound - ANSWERS✔-higher
\.frequency and attenuation are ____________ related - ANSWERS✔-directly
\.what is attenuation measured in - ANSWERS✔-decibels
\.more attenuation is caused by ___________ distances and ____________
frequencies - ANSWERS✔-longer, higher
\.less attenuation is caused by ___________ distances and ______________
frequencies - ANSWERS✔-shorter, lower
COMPLETE QUESTIONS WITH 100%
VERIFIED ANSWERS
\.sound ______________ as it propagates - ANSWERS✔-weakens
\.as sound waves propagate, they change ______________ - ANSWERS✔-
direction
\.sound is a _______________ and __________________ wave - ANSWERS✔-
longitudinal, mechanical
\.what is the weakening of the soundwave called - ANSWERS✔-attenuation
\.what is the strengthening of a soundwave called - ANSWERS✔-amplification
\.what is the log of a number - ANSWERS✔-the number of 10's multiplied
together to create that number
\.what is the log of 100 - ANSWERS✔-2 (10 x 10)
\.decibel notation is _________________ - ANSWERS✔-logarithmic
,\.decibels report __________ changes - ANSWERS✔-relative
\.what two intensities do decibels require - ANSWERS✔-the reference and the
level at the time of measurement
\.decibels are a __________ - ANSWERS✔-ratio
\.positive decibels report signals that are _______________ in strength or getting
____________ - ANSWERS✔-increasing, larger
\.when a wave's intensity doubles, the relative change is ______________ -
ANSWERS✔-+3 dB
\.when intensity increases ten-fold, the relative change is _______ - ANSWERS✔-
+10 dB
\.what is the 3 dB rule - ANSWERS✔-when a waves intensity doubles the relative
change is +3 Db
\.what do negative decibels describe - ANSWERS✔-attenuation
\.what do positive decibels describe - ANSWERS✔-amplification
, \.dB is a mathematical representation with a _____________ and
______________ scale - ANSWERS✔-logarithmic, relative
\.what two factors is attenuation determined by - ANSWERS✔-path length and
frequency of sound
\.distance and attenuation are _____________ related - ANSWERS✔-directly
\.the longer the sound beam travels, the more it _______________ - ANSWERS✔-
attenuates
\.attenuation is greater in _____________ frequency sound - ANSWERS✔-higher
\.frequency and attenuation are ____________ related - ANSWERS✔-directly
\.what is attenuation measured in - ANSWERS✔-decibels
\.more attenuation is caused by ___________ distances and ____________
frequencies - ANSWERS✔-longer, higher
\.less attenuation is caused by ___________ distances and ______________
frequencies - ANSWERS✔-shorter, lower
