OCEA Quiz 4

Oxygen enters seawater:

as a byproduct of photosynthesis and diffusion from the surface.

The two most abundant elements (ions) dissolved in seawater are:

Sodium and chloride

As carbon dioxide enters the ocean it:

Forms carbonic acid

The average salinity of the word ocean is about ______ parts per thousand.

34

What is the approximate mixing time of the world ocean?

None of these

The hydrogen atoms in a water molecule tend to bond to:

Oxygen atoms of another water molecule

The deepest layers of the ocean originate from:

Surface waters especially at high altitudes.

The principle of constant proportions states:

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

Residence time is:

The average length of time an element spends in the ocean.

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

A Halocline

Which of the following statements about pH is not true?

A pH of 3 is alkaline, a pH of 10 is acidic.

The depth to which light can penetrate the ocean depends on:

All of these

To varying degrees, the ocean is stratified with respect to:

All of these

Which of the atoms in the image above are represented by the different colors and polarities below?

H = Red and (-); O = White and (-)

The property of water that accounts for the ability of liquid water to absorb heat and change only very little in temperature is called:

High heat capacity

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

In colder water

If our planet were without its ocean, but otherwise the same as it is today, surface temperatures would be:

More extreme of cold and heat

Which of the following statements is FALSE regarding sound in the ocean?

The speed of sound in the ocean decrease as temperatures increase.

The term salinity refers to:

The total amount of dissolved solids in the ocean

The hydrogen bonds of water molecules account for all of the following EXCEPT?

Water is always safe for human consumption