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Terms
Water Quality 1
Water Quality 2
Air Quality
Gases
100
Increased average temperatures worldwide caused by the enhanced greenhouse effect.
What is global warming?
100
How poisonous a substance is.
What is toxicity?
100
Clarity
What is not a good indicator of water quality?
100
Formed by sulfur dioxide, this form or precipitation can be harmful to the environment.
What is acid rain?
100

A colourless, odourless gas; produced by incolplete combustion of chemicals containing carbon. Major source: motor vehicles.

What is carbon monoxide

200
Layer in the atmosphere 15 to 50 km above Earth's surface; protects earth from UV radiation.
What is the ozone layer
200

As it increases, the diversity fo plants and animals that live in the water decreases.

What is acidity?

200
Measurement used to describe very small concentrations of chemicals.
What is parts per million (PPM)?
200
Irritation of the throat and stinging of the eyes.
What are indications of poor air quality?
200
A gas that forms when sulfur combines with oxygen in the air; major air pollutant that forms both smog and acid rain. Major source: industrial processes.
What is sulfur dioxide?
300
Amount of a substance that causes 50% of a group of test animals to die if they are given a specified dose of the substance all at once.
What is lethal dose 50 (LD50)?
300
-fish -plankton -plants -protozoa -worms -bacteria -insects -viruses
What are biological indicators for water quality?
300
1. Human drinking water 2. Recreation such as swimming 3. Livestock drinking water 4. Irrigation 5. Protection fo aquatic life
What are the five categories of water use?
300
May lead to climate change which could dramatically affect living things all over the world.
What is global warming?
300
A colourless, odourless gas; at ground level, it's a pollutant produced as a result of industrial processees adn the use of motor vehicles. High in the atmosphere, it forms a layer protecting Earth from the Sun's Ultraviolet radiation.
What is ozone?
400
The greenhouse effect made greater by human activities, such as burning fossil fuels and learing land, that add greenhouse gases to the atmosphere.
What is the enhanced greenhouse effect?
400
-Dissolved oxygen -Acidity -Heavy Metals -Plant nutrients such as nitrogen and phosphorus -Pesticides -Salts such as sodium chloride and magnesium sulfate
What are the most commonly monitored indicators of water quality?
400
-Temperature -Turbulence due to wind or teh speed of moving water -The amount of photosynthesis by plants and algae in the water -The number of organisms usign up the oxygen
What affects the level of dissolved oxygen?
400
Causes thinning of the ozone.
What are CFCs (chlorofluorocarbons)?
400
Gases in Earth's atmosphere that trap the heat that froms when radiant energy from the Sun reaches Earth's surface.
What are greenhouse gases?
500
Concentration of acid that can dramatically lower the pH of the water in a pond, slough, lake, or river for a short period of time; occurs in areas where acid precipitation is a problem and acidic deposits build up in ice and snow in the winter; in spring, when the ice and snow melt, the acid melt water flows into aquatic systems.
What is spring acid shock?
500
Toxic to a wide range of organisms, including humans. Has a density of five grams per centimeter cubed (5g/cm3) or more.
What is a heavy metal?
500
Designed to protect humans, animals, crops, and other organisms that live in or near our water systems.
What are water quality guidelines?
500
It is found above Earth's atmosphere.
What is ozone?
500
A major air pollutant; forms when nitrogen combines with oxygen as a result of fuel. Combustion; gives smog its characteristic brown colour. Major source: motor vehicles.
What are nitrogen oxides?