Ch 6 Water Quiz

The principle of constant proportions states:

that the ratio of major salts in samples of seawater from various places is a constant.

The wavelength(s) of light that penetrate deepest into the ocean are:

green and blue.

80 calories of heat are required to change 1 gram of ice to liquid water. This represents water's:

latent heat of fusion

The amount of oxygen that seawater can hold in solution will be greater:

in colder water.

The ocean's deep sound channel (sofar layer) is characterized as a zone by all of the following EXCEPT:

sound velocity is at a maximum.

The density of seawater will increase:

when the salinity increases.

The average salinity of the world ocean is about ____.

3.5%

The type of bond that enables water molecules to stick together is a:

Hydrogen bond.

The term "salinity" refers to:

The total amount of dissolved solids in the ocean

As carbon dioxide dissolves at the surface of the ocean, it combines chemically to form a weak acid called carbonic acid.

True

Scientists believe the global change in greenhouse gases is making the surface ocean fresher in high latitudes.

True

The density of seawater is affected by both temperature and salinity.

True

The geometry of the covalent bonds shared by the hydrogen atoms and oxygen atom in a water molecule account for its polarity.

True

The salinity of seawater can be calculated if the amount of chloride is known because the ratio of dissolved solids is constant.

True

A zone in which the ocean's salinity changes rapidly with increasing depth is called:

a halocline.