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-LS2-1

Which of these is NOT a source of nitrogen?

• Animal Manure

• Sediment

• Human Wastewater and/or Sewage

• Fertilizer

Tags

NGSS.MS-LS2-3

Which of these is NOT a source of phosphorus?

• Photosynthesis

• Fertilizer

• Animal Manure

• Detergents in Wastewater

Tags

NGSS.MS-LS2-3

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

Which of these is NOT something we could learn about from testing the turbidity of water?

• How cloudy the water is

• How many nutrients are in the water

• Relatively how much sediment is in the water

• Relatively how much algae is in the water

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-LS1-5

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

What does it mean if we found coliform bacteria in the water?

• there are a lot of bacteria acting as decomposers

• the water is safe to drink

• mammal or human feces has gotten into the water

• there will be an algae bloom

Tags

NGSS.MS-ESS3-4

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-LS2-1

NGSS.MS-LS2-3

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

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

• Low DO

• High DO

• High Nitrate

• High Phosphate