Week #6: Chemical Water Quality

Which combination below would represent the highest water quality?

• low pH, high nitrates, neutral temperature

• low temperature, neutral pH and low nitrates

• as many nitrates as possible, low temp and low pH

• high temp, high nitrates and high pH

Tags

NGSS.MS-LS1-5

How does increasing nitrates impact stream health?

• generates excess algae

• causes increased oxygen

• decreases water turbidity

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

What is the FINAL result of eutrophication?

• More algae is produced

• decreased oxygen and fish kills

• less turbidity in the water column

• a new pond forms

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

If water temperature goes UP, what happens to the level of Dissolved oxygen?

• It goes up
• It goes down

Tags

NGSS.MS-PS3-4

Which water quality indicator will be most impacted by burning fossil fuels and air pollution?

• nitrates
• pH (water will be more acidic)
• Dissolved oxygen
• turbidity

Tags

NGSS.MS-ESS3-3

pH is the measurement of

• how acidic or basic a solution is.

• just the acidity of a solution.

• how acidic or basic the atmosphere is.

• Non of the above.

pH value of LESS than 7 is considered to be

• polluted.

• basic.

• like drain cleaner.

• acidic.

Temperature of the water impacts

• what kind of organisms can live in rivers, creeks and lakes.

• the amount of dissolved oxygen.

• the amount of minerals dissolved in the water.

• all of the above

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Why are too many nutrients (like nitrates and phosphates) bad for our waters?

• Nutrients decrease the pH of the water, causing it to become increasingly acidic

• Nutrients change the salinity of the water

• Wetlands filter out runoff that may contain nutrients

• Nutrients in the water cause too much algae growth, which decrease the level of oxygen in the water as they die and decompose

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which glass contains water with high turbidity?

• Glass 1

• Glass 2