Water Quality Review

What is the root cause of eutrophication?

• Sediment

• Algae Blooms

• Pesticides and other chemicals in runoff

• Too many nutrients (nitrate and phosphate)

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

What does BOD measure?

• How much oxygen is currently in the water

• How much ozone is in the water

• How much oxygen all of the organisms in the water need

• How cloudy the water is

The water's pH can tell us the following things, EXCEPT for:

• if there are excess nutrients in the water

• if there was a recent acid rain event

• how acidic or basic the water is

• what organisms are able to survive in that body of water

Tags

NGSS.MS-PS1-2

What does DO measure?

• The amount of oxygen in the water

• The amount of nutrients in the water

• The amount of algae in the water

• The pH of the water

Why does eutrophication result in dead zones / fish kills?

• Nitrate and phosphate are toxic to fish

• Algae block sunlight

• Algae use up all the excess nutrients

• Decomposers that break down dead algae remove oxygen from the water

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

If you found high levels of BOD, which of the following results would you NOT expect?

• Low DO

• High DO

• High Nitrate

• High Phosphate

Tags

NGSS.HS-LS2-3

What is the biggest source of both sediment and nutrient pollution in the bay?

• Wastewater Treatment

• Agriculture

• Construction and Factories

• Urban Areas

Tags

NGSS.MS-ESS3-4

Which of these is NOT a source of phosphorus?

• Photosynthesis

• Fertilizer

• Animal Manure

• Detergents in Wastewater

Which of these things would decrease the amount of DO in the water?

• algae or SAV photosynthesizing

• wind blowing along the surface

• decomposers using cellular respiration to break down detritus

• precipitation causing an increase in runoff and currents

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-4

Which best explains how nutrients, salt, sediment and pollutants get into estuaries and oceans?

• From precipitation falling over the estuaries and oceans

• From organisms living and dying in estuaries and oceans

• From rivers and streams flowing into estuaries and oceans

• From asteroids and comets impacting Earth at estuaries and oceans

Tags

NGSS.MS-LS2-3