Author Question: Only temperature and salinity have an effect on the speed of sound. Indicate whether the statement ... (Read 78 times)

rmenurse · **on:** Aug 22, 2018

Only temperature and salinity have an effect on the speed of sound. Indicate whether the statement is true or false.

Question 2

What was not a factor in making the mapping of the Earth's ocean more difficult?
a. The water covering our planet
b. The clouds in the atmosphere
c. Technology to measure depths
d. The gravitational pull of underwater features

shailee · **Reply #1 on:** Aug 22, 2018

Answer to Question 1

ANS: F
The speed of sound in water changes based on water's temperature, salinity, and pressure. This can
cause depth readings from echo sounders to be inaccurate. Information can be found in the section
Understanding the Ocean Began with Voyaging for Trade and Exploration

Answer to Question 2

ANS: D
The amount of water on the planet, the clouds in the atmosphere, and technology have hindered
discovering the bathymetric studies at some point. The gravitational pull, however, has played a
helpful role in satellite calculations of the depth of the Earth. Information can be found in the section
Ocean Floor Is Mapped by Bathymetry