Water Quality and Treatment Slides

improved water quality can be achieved by

• appropriate use of water

• careful water storage and handling

• proper land management

• all of the above

Water that has been used by humans, but doesn't contain sanitary waste is called ________________.

• gray water
• septic water
• potable water
• none of these

"Turbidity" is the measure of a body of water's ____________________________.

• cloudiness
• eutrophication
• temperature change
• flocculation

Tags

NGSS.MS-LS2-1

How could pesticides get into lakes and streams?

• too much could be used
• it could be sprayed too close to a stream
• rain could wash pesticides into a stream
• all of the above

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following is NOT a desired effect in streams?

• a pH of about neutral
• low salinity
• high temperature
• low nitrates

Select the correct order for the water treatment process.

• Sedimentation - Chlorination - Filtration
• Sedimentation - Filtration - Chlorination
• Filtration - Chlorination - Sedimentation
• Filtration - Sedimentation - Chlorination

Which statement is true about streamside vegetation?

• trees provide shade, which makes water too cold for most animals
• roots help stabilize shorelines, preventing erosion
• leaves that fall into the water pollute the stream
• plants along a stream steal oxygen from the animals

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

During secondary treatment in the aeration tanks, what is working on the sewage waste?

• micro-organisms
• humans
• air titration
• oxidation/reduction

What does chlorination do to the water?

• Removes microorganisms
• Cleans the water
• Makes the water taste nice
• Removes twigs and sediment

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

What are two things that water treatment plants need to do?

• Clean and disinfect the water
• Boil and evaporate the water
• Remove the animals and plants
• Add chemicals and remove pesticides

Tags

NGSS.MS-PS1-2