Water Indicators and Pollution

Cooler water temperatures are better because

• Cold water holds more dissolved oxygen
• Cold water makes it harder for bacteria to grow
• Both are reasons why cool water is beneficial

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

The amount of flowing dirt in the water is 

• pH
• suspended sediment
• biodiversity
• dissolved oxygen

Water with high turbidity 

• is cloudy and hard to see through
• is clear

Temperature, turbidity, and suspended sediment are all 

• chemical indicators of water quality
• physical indicators of water quality
• biological indicators of water quality
• not indicators of water quality

Macroinvertebrates such as stoneflies, mayflies and water boatmen require high levels of dissolved oxygen and their abundance is an indication of:

• Poor water quality
• Good water quality
• Don't tell us anything about water quality
• Invertibrates don't tell us anything about water quality

What could cause water temperature to increase?

• Cold winter months
• Increased Dissolved Oxygen
• Pollution such as sediment in the water
• Shade from trees along riparian zones

Tags

NGSS.MS-ESS3-4

What two agriculture nutrients cause the greatest problems in surface waters? (lead to algae growth and depleted O₂)

• oxygen and nitrogen

• nitrogen and phosphorus

• hydrogen and nitrogen

• helium and phosphorus

How does fecal coliform bacteria get into the water (e. coli)?

• soil erosion
• burning fossil fuels
• human and animal waste
• waste water from factories

Tags

NGSS.MS-LS2-4

measurement system used to indicate the concentration of hydrogen ions in a solution; ranges from 0 to 14

• pH scale
• turbidity
• potability
• phosphates

Usually found in fertilizers and can cause serious water quality issues when running into a body of water.

• dissolved oxygen
• phosphates
• substrate
• salinity

Tags

NGSS.MS-LS2-5