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Flashcards in Water Quality And Earth's Oceans Deck (12):

What is nitrate?

A nitrate is a nitrogen-based compound often used in fertilizers.


What is turbidity?

A measure of the cloudiness of water, from sediments, microscopic organisms, or pollutants, is turbidity


What is turbidity measured with?

Turbidity is measured using a device called a Secchi disk


What are Bionindictators?

An organism that is sensitive to environmental conditions and is one of the first to respond to changes a bioindicator.


What is remote sensing?

The collection of data from a distance is called remote sensing.


List oceans in size order: biggest to smallest

Pacific, Atlantic, Indian, southern, artic


What makes up the dissolved substances in sea water? About 99%?

Chlorine- 55%
Sodium- 30.6%
Sulfate- 7.7%
Magnesium- 3.7%
Calcium- less than 1%
Potassium- less than 1%
Other types of salt- less than 1%


What is salinity?

Salinity is a measure of the mass of dissolved solids in a mass of water.


What is seawater?

seawater is water from a sea or ocean that has an average salinity of 35 ppt


What is brackish water?

Brackish water, or brack water, is freshwater mixed with seawater. The salinity of brackish water is often between 1 ppt and 17 ppt.


Explain sea floor resources.

There are two main categories of seafloor resources—energy resources and minerals. Energy resources, such as oil, natural gas, and methane hydrates, are beneath the ocean floor on continental margins. Most mineral deposits, such as the manganese nodules, are on abyssal plains. Some minerals, including gold and zinc, have also been discovered at mid-ocean ridges.


What is coral bleaching?

is the whitening of coral due to stress in the environment, such as an increase in water temperature or increased exposure to ultraviolet radiation.