Water Quality 2324

Water with high turbidity 

• is cloudy and hard to see through
• is clear

Tags

NGSS.MS-LS2-1

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

Tags

NGSS.MS-LS2-4

an important element for fish and other aquatic animals to live

• dissolved oxygen
• substrate
• brackish water
• algae

Tags

NGSS.MS-LS1-5

A measure of the amount of dissolved salts in a given amount of liquid

• salinity
• bio-indicators
• wave
• tide

Which of the following are indicators of healthy water systems?

• high nitrates, high pH, and low temperatures
• low temperatures, high dissolved oxygen, and neutral pH

Tags

NGSS.MS-ESS2-4

What is the possible effect of high nitrate level in water systems?

• algal bloom
• fewer algae

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

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

How does acid rain affect the pH of a stream or lake?

• The pH decreases.
• The pH increases.
• Acid rain does not affect pH.
• It causes an explosion.

Tags

NGSS.MS-PS1-2

Which best explains the importance of pH in determining the health of a water system?

• Most organisms living in water are able to adapt to changing water pH.

• Variations in the pH of water can indicate the presence of toxic substances.

• A low pH in ground water encourages the growth of photosynthetic organisms.

• Variations in the pH of water can affect the ability of water to absorb atmospheric gases.

The pH of healthy water is _______________.

• 0-5

• 6.5-8.5

• 9-14

Tags

NGSS.MS-PS1-2