Water Quality Indicators

What factor is NOT directly used to predict the safety and potability of water supplies in North Carolina?

• Temperature

• Dissolved oxygen

• Color of the water

• pH

Which biological factor is important for predicting the potability of water supplies?

• Soil texture

• Bio-indicators

• Sunlight exposure

• Air quality

High levels of nitrates and phosphates in water can indicate what?

• Potential for eutrophication

• High water clarity

• Low pollution

• Decreased water temperature

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What does turbidity measure in water?

• Temperature

• Acidity

• Clarity

• Oxygen levels

Why is dissolved oxygen important for water potability?

• It increases turbidity

• It supports aquatic life

• It decreases pH

• It indicates high temperatures

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What effect does a low pH level have on water quality?

• Can be corrosive and harmful

• Decreases turbidity

• Indicates high oxygen levels

• Increases potability

Tags

NGSS.MS-PS1-2

Which is NOT a physical factor used to predict water safety and potability?

• Bio-indicators

• Dissolved oxygen

• Turbidity

• Temperature

What does a high turbidity level indicate about water?

• Lower pollution

• Less clarity

• Higher potability

• More dissolved oxygen

Why are bio-indicators used to assess water quality?

• To measure temperature

• To indicate the presence of pollutants

• To increase pH levels

• To decrease turbidity

Tags

NGSS.MS-LS2-4

What can cause an increase in nitrates and phosphates in water?

• Agricultural runoff

• Lower temperatures

• Higher dissolved oxygen

• Decreased aquatic life

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4