12.3

Question 1

Point source

Answer 1

A source of pollution that is easily traceable and comes from one small, specific source.

Question 2

Examples of point sources

Answer 2

Resource industry (leaks from oil and gas drilling), recreational (oils spills from boats or cars) marine transportation (garbage from freighters, cruise ships and tankers) and industrial (waste water from factories, mills and power plants)

Question 3

Non point source of pollution

Answer 3

A source of pollution that is difficult to trace. They come from many different sources. They are difficult sources to control. Many small non point sources can combine and cause major environmental damage.

Question 4

Examples of non-point sources

Answer 4

Land development (industrial spills, increased run-off, increased sediments in water), agriculture (pesticides, fertilizers animal waste) storm water run-off (oil, chemicals and other contaminants from industrial, commercials and residential sources) sewage treatment (leakage, causing bacterial contamination) forestry (increased run off and increased sediment, increased erosion) air pollution (air filled with particles and toxins that are then deposited in water supplies) water activities (gas and oil spills from boats)

Question 5

Materials that can make the quality of water go down

Answer 5

Chemical (acid rain) physical (oil spills) and biological (bacteria)

Question 6

Acid precipitation

Answer 6

A mixture of nitrogen oxides and sulfur dioxides from the burning of fossil fuels. They combine to form sulfuric and sulfurous acid and nitric and nitrous acid.

Question 7

pH scale

Answer 7

Ranges from 0-14 with 0 being acidic, 7 being neutral and 14 being alkaline/basic