Water Quality Indicators Quiz

What is the measurement unit for water quality indicators?

• Meters per second

• Grams per liter

• Liters per gallon

• Parts per million

Which of the following is an example of a physical water quality indicator?

• Phosphates

• Nitrates

• Dissolved Oxygen

• pH

Why is there less dissolved oxygen in warm water?

• Warm water absorbs oxygen from the air

• Atoms heat up and release oxygen

• Cold water has more oxygen molecules

• Plants release oxygen in cold water

What is the average level of dissolved oxygen in most fresh surface water?

• 9 ppm

• 5 ppm

• 8 ppm

• 4 ppm

Tags

NGSS.MS-LS2-3

What are two ways that the temperature of a body of water can increase?

• Evaporation and rainfall

• Wind and erosion

• Turbidity and pH

• Sunlight and air pollution

Tags

NGSS.MS-ESS2-4

Which do you think is safer to drink: water with a high turbidity or a low turbidity?

• Turbidity does not affect safety

• Both are equally safe

• Low turbidity

• High turbidity

Is salt water acidic or basic?

• Depends on the location

• Neutral

• Basic

• Acidic

What happens if there are too many nutrients in a body of water?

• No effect on water quality

• Improved water quality

• Increased dissolved oxygen

• Decreased oxygen levels

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

If a river is missing a species that is sensitive to pollution, what can be determined about the health of the river?

• The river is healthy

• The river is affected by temperature changes

• The river is polluted

• The river is undergoing eutrophication

Tags

NGSS.MS-LS2-4

Who determines standards for water quality?

• The EPA

• The FDA

• The CDC

• The WHO