Water Quality Practice

What is dissolved oxygen?

• The property of containing salt

• The amount of suspended solids

• The measure of the amount of oxygen that is dissolved

• Describes how acidic or basic water is

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

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

True or False: A substance with a pH of 9 is considered basic.

• True

• False

What is pH?

• The property of containing salt

• The measure of the amount of oxygen that is dissolved in water

• The amount of suspended solids in water

• The measurement of the acidity or basicity of water

Which glass contains water with high turbidity?

• Glass 1

• Glass 2

A body of water showed a high turbidity level, high levels of nitrates and phosphates, a pH of 7.5, and low dissolved oxygen levels. Would this body of water be considered healthy?

• Yes

• No

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the healthiest combination listed?

• low pH, high nitrates, neutral temperature
• low temperature, neutral pH and moderate nitrates

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

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

High turbidity means.....

• very clear water
• neutral pH
• very murky or cloudy water
• high nitrates

how does increasing nitrates impact stream health

• excess algae
• increased oxygen
• increased water clarity

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

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

• It goes up
• It goes down

Tags

NGSS.MS-PS3-4