Water Quality

pH value of less than 7 is considered to be

• polluted.

• basic.

• like drain cleaner.

• acidic.

pH is the measurement of ______

• how acidic or basic a solution is.

• just the acidity of a solution.

• how acidic or basic the atmosphere is.

• how hot or cold the water is

pH greater than 7 is considered to be

• neutral.

• basic.

• acidic.

• polluted.

Which glass contains water with high turbidity?

• Glass 1

• Glass 2

pH value of less than 7 is considered to be

• polluted.

• basic.

• like drain cleaner.

• acidic.

Describes the chemical, physical and biological attributes of water as it is fit for drinking, fishing, swimming, farming, etc

• Water Quality
• Water Sheds
• Dissolved oxygen
• nitrates

A small city gets its drinking water from the river running through its center. This river is fed by rivers that flow down the mountains nearby.How would excessive rainfall in the mountains most likely affect the turbidity of this local water source?

• A. Heavy rainfall would decrease the turbidity of the river downstream.

• B. Heavy rainfall would increase the turbidity of the river downstream.

• C. Heavy rainfall would increase the turbidity of only rivers upstream.

• D. Heavy rainfall would decrease the turbidity of only rivers upstream.

Cholera is a bacterial disease that is spread throughout a community by contaminated water. How can the spread of cholera (bacteria) be prevented?

• by giving healthy people antibiotics before they get sick

• by hand washing with contaminated water before food preparation

• by using Chlorine to treat water before it enters the water supply

• by using waste to fertilize fields instead of releasing it into the water supply

What does a pH of 7 most likely indicate about the water quality?

• The water is a strong base

• The water is highly acidic

• The water is toxic to drink

• The water is safe to drink

Which is an accurate prediction of the pH of a lake that receives large amounts of acid rain?

• 4-5

• 7-8

• 9-10

• 13-14