RP 33 Ch.7-Ch.9

A mesmerizing underwater scene showcasing sound waves propagating through deep ocean waters, with marine life in the background, highlighting acoustic layers and phenomena.

Explore the Depths: Sound in the Ocean

Test your knowledge on the fascinating aspects of sound propagation in deep ocean areas with our engaging quiz! Dive into questions covering variables that affect sound speed, acoustic mechanisms, and sonar detection techniques.

10 multiple choice questions
Understand key concepts in underwater acoustics
Great for students and enthusiasts alike

10 Questions2 MinutesCreated by DivingWave527

______ is the dominant variable effecting the speed of sound in deep-ocean areas.

Pressure

Depth

Temperature

Salinity

The intensity of sound within a shadow zone increases exponentially with the distance from the limiting ray.

True

False

At low frequencies, _____ within the bottom is the predominant mechanism for returning energy.

Refraction

Reflection

Deflection

Compression

In shallow water, ______ can become a very important acoustic factor affecting USW.

Temperature

Pressure

Salinity

Volume

The effect of biological activity on overall ambient noise level is more pronounced in shallow coastal waters than it is in deep ocean.

True

False

Both ___ & _____ must be located in the negative sound speed gradient below the SLD for topographic noise stripping to occur.

Medium & source

Source & receiver

Receiver & medium

Medium & detector

Select the passive sonar equation.

SE = SL - PL - LE - RD

SL = SE - RD - LE - PL

SE = SL - PL - LE - 2RD

SE = SL - PL - LE + RD

The _____ level for target-radiated noise is the acoustic intensity reduced to a reference distance of 1 yard from the point from which the sound appears to be radiated.

Detection

Medium

Source

Ambient

In passive sonar detection and tracking, the sensor receives a signal generated by the ______.

Detector

Target

Source

Operator

RP 33 Ch.7-Ch.9

Explore the Depths: Sound in the Ocean

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