Water Pollution

Water covers _________ of the earth.

• 30%

• 40%

• 60%

• 70%

What is true of water pollution in the US?

• nearly half of our rivers and streams are polluted

• nearly half of our lakes are polluted

• both of these are true

• neither of these are true

80% of ocean pollution originates _________

• from spills on the ocean

• on land

• from human wastewater

• all of these combined

Point source water pollution: ______________

• is diffused from many sources into the water

• originates from one human being

• originates from one single source

• depends on the type of pollution

An example of nonpoint source pollution is: ________

• a manufacturer dumping waste into a river

• a car leaking oil into groundwater

• plastic blowing into rivers and oceans

• all of these are nonpoint source pollution

Nonpoint source pollution is _______________.

• contamination from one source

• contamination from many sources

• contamination from one person

• depends on what the type of pollution is

Transboundary pollution is:

• always an example of radioactive pollution

• pollution from one country spilling into the waters of another

• when oil leeches into ground water and gets into wells

• when fertilizers spill into reservoirs and contaminate them

Groundwater is ___________

• underground water in the spaces between rocks

• water above ground like lakes and rivers

• wastewater like sewage and human fecal matter

• oceans

Which of the following is not an example of surface water?

• oceans

• aquifers

• lakes

• streams and rivers

Fertilizer runoff includes

• nutrient pollution of nitrates and phosphates

• extra CO₂ entering the water from the atmosphere

• overheating water that creates algae blooms

• increasing the salinity (saltiness) of water