Using Freshwater Sustainably

Nonpoint pollution is hard to control because_____.

• it often involves very large volumes of water coming from a single source.

• “nonpoint” means that there is no point in trying to control it.

• it is caused by small amounts of pollution from many places.

• it contains high levels of pathogens.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

NGSS.MS-LS2-5

Discharge entering a stream at a specific, detectable point such as a pipe or outfall.

• Point source pollution
• Non-point source pollution
• Fog
• Riparian

Humans use freshwater primarily for_________.

• Agricultural Irrigation

• Drinking and Cooking

• Mining and Industrial Processes

• Electrical Production

Which type of irrigation sends water to the root zone of plants?

• drip

• pop-up heads

• side-roll watering

• transpiration

In a residence, how is most (26%) of the water used?

• Toilet

• Bath/shower

• Faucet

• Dishwasher

What is Pollution?

• Increase in Earths temperatures
• Sudden growth in algae in a pond
• Decrease in oxygen in water
• Harmful substance in environment

What is the first step in the water treatment process?

• coagulation

• filtration and removal of debris, sand, grit, etc.

• flocs

• concentation

Eutrophication is caused by

• excess nutrients building up in the water.

• industrial point-source pollution.

• unlined landfills and septic tanks.

• wastewater from homes mixing with drinking water.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Some things that cause ocean pollution are

Choose multiple answers.

• oil rigs, oil tankers

• barges, cruise ships, animal waste

• sea turtles

• environmentalists and scientists

Why can rivers recover from pollution more quickly than other bodies of water?

• Because flowing water helps breakdown pollutants and spreads them out

• Because there is less pollution in rivers

• Because there is more bacteria in rivers

• Because freshwater fish eat the pollution