Water Quality Indicators

Water with high turbidity 

• is cloudy and hard to see through
• is clear

Which of the following are indicators of healthy water systems?

• high nitrates, high pH, and low temperatures
• low temperatures, high dissolved oxygen, and neutral pH

Tags

NGSS.MS-LS2-4

Under which condition are large numbers of fish in a lake likely to die?

• when the water's dissolved oxygen is low and temperature is high
• right after a storm with heavy rainfall

Tags

NGSS.MS-LS2-4

Potable water is water that is ______________.

• polluted

• safe to drink

• biological

The pH of healthy water is _______________.

• 0-5

• 6.5-8.5

• 9-14

Tags

NGSS.MS-PS1-2

Sewage is a source of which pollutant?

• nitrates

• phosphates

• algae

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-3

Cleaning and industrial waste are sources of which pollutant?

• nitrates

• phosphates

• salinity

Tags

NGSS.MS-ESS3-3

High concentrations of salinity can cause vegetation to become unhealthy or die and can lead to a/an ___________ in biodiversity

• decrease

• increase

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

_______________ water quality is indicated by a few number of bio-indicator organisms in one place

• Poor

• Good

In 1972, the _______________ established the regulations on putting pollutants into the water

• Environmental Protection Agency (EPA)

• Clean Water Act

Tags

NGSS.MS-ESS3-3