X hits on this document

Word document

Test Bank for Marine Biology: Function, Biodiversity, Ecology 2E - page 4 / 44





4 / 44

c. Actually has a slope of 3 degrees seaward

d. Never connects with an oceanic trench

As one proceeds away from a mid-oceanic ridge

a. One finds that first the ridge is magnetically neutral, but then there is a polar magnetic field

b. The oceanic crust becomes younger and younger

c. The oceanic crust becomes older and older

d. The ridge has a reversed magnetic field, which reflects its formation many thousands of years ago

Water is a good solvent because

a. Of the charge asymmetry of the water molecule

b. Because it is a good polar solvent

c. Because of its high transparency

d. All of the above

Seasonal temperature changes are the greatest in

a. Polar waters

b. The Equatorial region

c. Mid-latitudes

d. The deep sea

Many elements in seawater are found in constant ratios throughout the ocean because

a. The input of dissolved substances from rivers is broadly constant throughout the ocean

b. Dissolved material in the ocean has been there for millions of years, with no input or removal

c. They remain in the ocean longer than the mixing time

d. This is not true; no elements are generally found in constant ratios

Trace elements in seawater include

a. Chlorine and potassium

b. Sodium and aluminum

c. Iron and strontium

d. Sodium and chlorine

Salinity is often estimated by chlorinity because

a. Chlorine is the only major element of sea wate

b. Chlorine is in constant ratio to sodium and other major elements

c. Chlorine can be separated from the rest of sea water simply by evaporation

d. Salinity is not estimated by chlorinity but by sodium  concentration

Document info
Document views2354
Page views3453
Page last viewedSun Jan 22 12:20:06 UTC 2017