SONAR calculations

The total time for sound waves to return to a ship was 8 seconds after being released. What is the depth in meters?

Distance (Depth) = Velocity x (Total time/2)

Velocity of sound in water = 1500 m/s

• 12,000m

• 6000m

• 375m

• 187.5m

The total time for sound waves to return to a ship was 4.5 seconds after being released. What is the depth in meters?

Distance (Depth) = Velocity x (Total time/2)

Velocity of sound in water = 1500 m/s

• 6750m

• 333.33m

• 667m

• 3375m

If the depth of the ocean floor is 9000 meters, how long, in total time, does it take sound waves to return to the SONAR detector?

Distance (Depth) = Velocity x (Total time/2)

Velocity of sound in water = 1500 m/s

• 13,500,000sec

• 12sec

• 0.17sec

• 3sec

If the depth of the ocean floor is 12000 meters, how long, in total time, does it take sound waves to return to the SONAR detector?

Distance (Depth) = Velocity x (Total time/2)

Velocity of sound in water = 1500 m/s

• 16sec

• 8sec

• 18,000,000sec

• 36,000,000sec

The time for sound waves to return to a ship from just the bottom of the ocean was 1.25 seconds. What is the depth in meters?

Distance (Depth) = Velocity x (Total time/2)

Velocity of sound in water = 1500 m/s

• 937.5m

• 1875m

• 10050m

• 1200m

If the depth of the ocean floor is 7500 meters, how long does it take sound waves to reach the bottom of the ocean?

Distance (Depth) = Velocity x (Total time/2)

Velocity of sound in water = 1500 m/s

• 10sec

• 5sec

• 11,250,000sec

• 0.2sec

The speed of sound varies when the medium it passes through changes. For example, the speed of sound through air is 343 m/s. A boat mapping the seafloor near Greenland determines after a 12-second ping, the depth is 8100 meters. What is the speed of sound in this cold, icy water?

Distance (Depth) = Velocity x (Total time/2)

• 1875m/s

• 48,600m/s

• 675m/s

• 1350m/s