Caballing is the mixing of two water masses with the same density but different temperatures and
salinity, resulting in a new water mass with lower density. Indicate whether the statement is true or false.
ANS: F
Caballing is the mixing and sinking of two water masses. The new water mass has a greater density
than the individual water masses. Information can be found in the section Thermohaline Circulation
Affects All the Ocean's Water
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Which of the following is a pattern of North American population movements?
A) an exodus of the Sunbelt B) pan-metropolitan growth where urbanites move frequently between large cities such as New York, Chicago and Los Angeles C) a movement from the Pacific to the Atlantic coastline D) the movement of African-Americans out of the South starting in the 20th century E) urban-to-rural migration as a result of job opportunities in agriculture
What effect do temperature and pressure have on the speed of sound when entering seawater?
a. The speed of sound increases as temperature and pressure decrease. b. The speed of sound increases with temperature increases, but decreases with pressure. c. The speed of sound decreases as temperature and pressure decrease. d. The speed of sound is impacted by pressure but not temperature. e. The speed of sound remains unchanged from the surface to the deep ocean.
Energy from the sun is constantly ____.
A. increasing in quality B. being recycled C. being destroyed D. becoming matter E. supporting plant growth
The "hole" in the Antarctic ozone ________
A) has now disappeared B) should disappear very soon C) was never proven to have existed D) persists longer and longer each year E) is invisible to satellite observations