ESS.8.3.1 - Predicting Water Safety and Potability in North C.

Which of the following is a measure of water clarity that can affect aquatic life?

• Temperature

• Turbidity

• pH

• Nitrates

What is the ideal pH range for most freshwater fish to thrive?

• 4.0 - 5.0

• 6.5 - 9.0

• 9.5 - 11.0

• 2.0 - 3.5

Tags

NGSS.MS-LS2-4

Explain how an increase in nitrates and phosphates can lead to a decrease in dissolved oxygen levels in a water body.

• Nitrates and phosphates directly consume oxygen.

• They promote algae growth, which depletes oxygen when decomposing.

• They increase water temperature, reducing oxygen solubility.

• They cause water to become more acidic, reducing oxygen levels.

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NGSS.MS-LS2-1

NGSS.MS-LS1-5

NGSS.MS-LS2-3

Which bio-indicator would you use to assess the health of a freshwater ecosystem?

• Frogs

• Algae

• Macroinvertebrates

• Fish

Tags

NGSS.MS-LS2-5

How does temperature affect the solubility of oxygen in water?

• Higher temperatures increase oxygen solubility.

• Lower temperatures decrease oxygen solubility.

• Higher temperatures decrease oxygen solubility.

• Temperature has no effect on oxygen solubility.

• 5

• 7

• 9

• 11

What is the primary source of phosphates in water bodies?

• Industrial waste

• Agricultural runoff

• Urban runoff

• Natural mineral deposits

Tags

NGSS.MS-LS2-4

Describe a method to measure turbidity in a water sample.

• Using a thermometer

• Using a Secchi disk

• Using a pH meter

• Using a nitrate test kit

Why is dissolved oxygen important for aquatic life?

• It helps in the decomposition of organic matter.

• It is necessary for respiration in aquatic organisms.

• It prevents the growth of harmful bacteria.

• It maintains the pH balance of water.

Tags

NGSS.MS-LS2-4

Analyze the potential impact of high turbidity on aquatic plants.

• It increases photosynthesis by providing more nutrients.

• It blocks sunlight, reducing photosynthesis.

• It has no impact on aquatic plants.

• It increases water temperature, enhancing growth.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS1-5

NGSS.MS-LS1-6