Essentials of Geology (Looseleaf) - With Access
Essentials of Geology (Looseleaf) - With Access
12th Edition
ISBN: 9780321937759
Author: Lutgens
Publisher: PEARSON
Question
Chapter 10, 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, Depth=12(1500m/sec×echotraveltime)

Explanation:

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

To calculate the time, rearrange the equation,

Echotraveltime=(depth×2)÷(1500)

Substituting, the depth in equation,

Echotraveltime=(10994m×2)÷1500=14.6seconds

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