E

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.

Tags

NGSS.MS-LS2-4

What is salinity?

• The measurement of dissolved salts

• The amount of suspended solids

• Describes the condition of the water

• Describes how acidic or basic water is

What is dissolved oxygen?

• The property of containing salt

• The amount of suspended solids

• The measurement oxygen that is dissolved

• Describes how acidic or basic water is

Where are nitrates and phosphates found?

• Fertilizer

• Manure

• Detergent

• All of the above

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

Check off ALL the physical factors that we need in order to predict the water is healthy

• low dissolved oxygen

• high dissolved oxygen

• neutral pH

• pH above 7

• pH below 7