Potable Water Quiz

What is potable water?

• Water that is used for irrigation

• Water that is used for industrial purposes

• Water that is safe to drink

• Water that is used for cleaning

Which of the following is NOT a criterion for water to be considered potable?

• Must be completely pure H2O

• No microorganisms like bacteria or fungi

• pH between 6.5 and 8.5

• Low levels of dissolved substances

What is the pH range for potable water?

• 4.5 to 6.5

• 6.5 to 8.5

• 7.0 to 9.0

• 5.0 to 7.0

Which of the following is a source of surface water?

• Aquifers

• Underground reservoirs

• Lakes

• Permeable rock

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

What is the first step in treating fresh water to make it potable?

• Filtering it through a wire mesh

• Passing it through a bed of sand and gravel

• Exposing it to ultraviolet light

• Sterilizing it with chlorine gas

Which method is NOT used to sterilize water?

• Adding salt

• Using ultraviolet light

• Exposing it to ozone

• Bubbling chlorine gas

Why is desalination considered impractical for producing large quantities of potable water?

• It is a slow process

• It requires a lot of energy and is expensive

• It is harmful to the environment

• It produces impure water

Tags

NGSS.HS-ESS3-2

NGSS.HS-ETS1-3

What is the main difference between distillation and reverse osmosis in desalination?

• Distillation requires less energy than reverse osmosis

• Reverse osmosis produces impure water

• Distillation involves boiling water, reverse osmosis uses a membrane

• Distillation uses membranes, reverse osmosis does not

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the benefit of using surface water?

• It is free from microorganisms

• It is easy to access and gets replaced frequently by rain

• It is always available

• It is always pure

What is an aquifer?

• An area of permeable rock that traps water underground

• A method of desalination

• A body of water exposed at the surface

• A type of surface water

Tags

NGSS.MS-ESS3-1