Water Quality Indicators

Which of the following are indicators of water quality?

• nitrates

• dissolved oxygen

• currents

• pH

• turbidity

The health of a water system is determined by the balance between what variables (choose all that apply)?

• physical

• physiological

• biological

• chemical

Tags

NGSS.MS-LS2-4

Pollution that comes from MANY different places and is hard to identify its source.

• Point

• Non-Point

A car leaks oil onto driveways and it washes away.

• Point

• Non-Point

Tags

NGSS.MS-ESS3-3

Which source most likely contains a large amount of nitrates and is non-potable?

• water near agricultural land

• water near a hillside

• water with a lot of leeches

• water source with a lot of aquatic life

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.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

A construction site's sediments wash away into a stream.

• Point

• Non-Point

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS2-2

The ______ ______of bioindicators in a water source indicates that it is healthy.

• Lack of Diversity

• Low Diversity

• High Diversity

• None of the Above

Tags

NGSS.MS-LS2-5

What is the healthiest combination listed?

• 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-LS2-1

NGSS.MS-LS1-5

Macroinvertebrates such as stoneflies and mayflies require high levels of dissolved oxygen. An abundance of these 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

NGSS.MS-LS2-1