Water Pollution Test

What type of life is most likely to be found in the septic zone of a polluted river?

• Birds and insects

• Fish and marine mammals

• Bacteria and other decomposers

• Aquatic plants and algae

What is the importance of Biochemical Oxygen Demand (BOD) in assessing water quality?

• BOD measures the temperature of water bodies

• BOD is crucial for determining the level of organic pollution in water bodies and its impact on aquatic ecosystems.

• BOD determines the salinity of water

• BOD is used to assess the pH level of water

How does high BOD in water bodies affect aquatic life?

• High BOD reduces oxygen levels in water, suffocating aquatic life.

• High BOD leads to increased biodiversity in water bodies.

• High BOD increases oxygen levels in water, benefiting aquatic life.

• High BOD has no impact on aquatic life.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Explain the relationship between BOD and the level of organic matter in water.

• BOD has no relationship with the level of organic matter in water.

• The relationship between BOD and the level of organic matter in water is random, with no correlation between the two.

• The relationship between BOD and the level of organic matter in water is inverse, as higher organic matter content leads to lower BOD values.

• The relationship between BOD and the level of organic matter in water is direct, as higher organic matter content leads to higher BOD values.

Tags

NGSS.HS-LS2-3

What are the sources of organic matter that contribute to BOD in natural water bodies?

• Chemical spills, deforestation, urban development

• Industrial waste, ocean currents, volcanic activity

• Mining runoff, air pollution, plastic waste

• Sewage, agricultural runoff, decaying plant material, animal waste

Tags

NGSS.MS-LS2-3

How can a high BOD level lead to oxygen depletion in water?

• High BOD level can lead to oxygen depletion in water by increasing fish population that consumes excess oxygen.

• High BOD level can lead to oxygen depletion in water by promoting the growth of oxygen-producing algae.

• High BOD level can lead to oxygen depletion in water by reducing the temperature of the water, affecting oxygen solubility.

• High BOD level can lead to oxygen depletion in water by increasing bacterial activity that consumes oxygen during the decomposition of organic pollutants.

Water with high turbidity 

• is cloudy and hard to see through

• is clear

Tags

NGSS.MS-PS1-2

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

• physical

• chemical

• biological

Tags

NGSS.MS-PS1-2

The amount of oxygen in the water, measured in parts per million (ppm)

• pH

• Dissolved Oxygen

• nitrates

• eutrophication

Tags

NGSS.MS-LS2-1

What piece of equipment do we use to measure turbidity?

• a chemical test

• bioidicators

• a secchi disk

• incision ration