Water Quality

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-LS2-5

Which glass contains water with high turbidity?

• Glass 1

• Glass 2

Tags

NGSS.MS-PS1-2

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 water quality?

• It describes the condition of the water

• It is the continuous movement of water on, above, and below the surface of the Earth

• It is the property of containing salt

• It is the total amount of suspended solids.

The residents of a suburban neighborhood have been experiencing foul-smelling tap water for several weeks. They suspect contamination and are concerned about the safety of their drinking water. What action should the residents take to address the issue with their tap water? Select TWO answers.

• Install a cheap water softening system.

• Contact the local water utility for testing.

• Boil the tap water before consumption.

• Use bottled water for all household purposes

• Ignore the issue as it might resolve on its own.

What piece of equipment did we use to measure turbidity?

• a chemical test

• bioidicators

• a turbidity tube

• turbidity sensor by measuring light scattered by the sample at 90 degrees

improved water quality can be achieved by

• appropriate use of water

• careful water storage and handling

• proper land management

• all of the above

Tags

NGSS.MS-LS2-5

Water that is contaminated with lead will have a high ______.

• conductivity

• nitrates

• pH

• water hardness

Tags

NGSS.MS-PS1-2

What are things we can do to improve water quality?

• appropriate use of water

• careful water storage and handling

• proper land management

• all of the above

Tags

NGSS.MS-ESS2-4

What is salinity?

• The property of containing salt

• The amount of suspended solids

• Describes the condition of the water

• Describes how acidic or basic water is