Earth: An Introduction to Physical Geology, Books a la Carte Edtion (12th Edition)
Earth: An Introduction to Physical Geology, Books a la Carte Edtion (12th Edition)
12th Edition
ISBN: 9780134182599
Author: Tarbuck, Edward J.; Lutgens, Frederick K.; Tasa, Dennis G.
Publisher: PEARSON
Question
Chapter 13, Problem 1GST
To determine

The time required for the echo sounder’s ping to make the trip from a ship to the Challenger Deep and back.

Expert Solution & Answer
Check Mark

Answer to Problem 1GST

The time required for the echo sounder’s ping to make the trip from a ship to the Challenger Deep and back is calculated as 14.6seconds.

Explanation of Solution

Given info:

DepthofChallengerDeep=10994meters

The equation for calculating water depth from echo sounding is given below:

Depth=12(1500m/sec×echotraveltime)

1500meters/second(4900feet) is the average speed of sound waves in water.

To calculate the time, rearrange the following equation:

Echotraveltime=(depth×2)(1500m/sec)

Substitute the depth in the equation.

Echotraveltime=(10994m×2)(1500m/sec)=14.6seconds

Conclusion:

Thus, the time required for the echo sounder’s ping to make the trip from a ship to the Challenger Deep and back is 14.6seconds.

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