Chapter 20 - Earth Science - Ocean Water

Which of the following is not one of the six most abundant elements in the ocean

All organisma that swim actively in open water, independent of currents

The speical use of membranes that allow water to pass through and leave the salt behind

The two principal gases in the atmosphere

____ are microscopic plants in the ocean that provide food to many of the ocean's organisms.

The ratio of the mass of a substance to the volume of the substance

Which of the following is not a resource found in the ocean

Which of the following is not of the six most abundant elements in the ocean.

Why is the ocean blue?

Ocean temperature varies depending on

The five zones that make up the benthic zone in order starting with the shore

Oceans are commoly referred to as ___, becasue they trap so much carbon dioxide.

A loating layer of sea ice that completely covers an area of the ocean surface

The mass of mostly microscopic organisms that float or drift freely om the waters.

Ocean water is _ % pure water.

Most of the elements that form sea salts come from

Organisms that live at the bottom of the ocean or bodies of fresh water

A process of removing salt from ocean water

Most marine organisms depend on two major factors for their survival

A measure of the amount of dissolved salts in a given amount of liquid

The ocean is about ___ % sa;ts

Two factors that affect the density of ocean water

Oceans conatin ____ times as much carbon as the atmosphere does.

The region of an ocean or body of fresh water above the benthic zone

The movement of deep, cold and nutrient-rich water to the surface

The raising of aquactic plants and animals for human use or consumption

Salinity ranges in the ocean from _________ %.

A method of desalination when ocean water is heated to remove the salt

A layer in a body of water in which water temperature drops with depth

The bottom region of oceans and bodies of fresh water