Water Unit Test Review

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-LS1-5

The pH of healthy water is _______________.

• 0-5

• 6.5-8.5

• 9-14

Cleaning and industrial waste are sources of which pollutant?

• nitrates

• phosphates

• salinity

Tags

NGSS.MS-LS2-5

_______________ 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

The health of a water system is determined by the balance between what variables (choose all that apply)?

• physical

• physiological

• biological

• chemical

Tags

NGSS.MS-ESS3-4

Temperature, turbidity, and water movement are the _____________ factors used to determine water quality.

• physical

• chemical

• biological

Dissolved oxygen, pH, nitrates, and salinity are _____________ factors used to determine water quality.

• physical

• chemical

• biological

Tags

NGSS.HS-ESS2-5