Water Quality

a measure of how suitable water may be for drinking

• turbidity

• mangrove forest

• tide

• potability

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-LS2-1

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

• algal bloom

• fewer algae

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Under which condition are large numbers of fish in a lake likely to die?

• when the water's dissolved oxygen is low and temperature is high

• right after a storm with heavy rainfall

Tags

NGSS.MS-LS1-5

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.

Tags

NGSS.MS-PS1-2

Which most likely has the highest number of contaminants in the water?

• a water system with moderate turbidity

• a water system with high turbidity

• a water system with low turbidity

• a water system with no turbidity

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

The pH of healthy water is _______________.

• 0-5

• 6.5-8.5

• 9-14

High concentrations of salinity can cause vegetation to become unhealthy or die and can lead to a/an ___________ in biodiversity

• decrease

• increase

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4