ChemComm: Water Purification Review

What do sedimentation tanks do at the waste water treatment plant?

• Kill the pathogenic bacteria.
• Aerate the water for good bacteria to grow.
• Allow heavy materials to sink to the bottom.
• Filter the large pieces of debris.

Why is fluoride added to your drinking water?

• To protect your bones.
• To build strong muscles.
• The kill the bacteria.
• To help prevent tooth decay.

Chlorine is added to water during treatment. Why?

• To remove large debris
• To kill pathogens
• To remove heavy metals
• To improve tooth health

Tags

NGSS.MS-PS1-2

97% of the water on earth is _________, making it undrinkable for humans.

• Fresh water
• Ground water
• Salt water
• Surface water

Filtration, settling, aeration, and chlorination are all steps in...

• Water purification
• Water pollution
• Groundwater recharging
• Desalination

Tags

NGSS.HS-ETS1-3

The cleaning process of putting water through several screens

• coagulation
• sedimentation
• filtration
• aeration

Waste water and solid waste

• sludge
• sewage
• floc
• sediment

Tags

NGSS.HS-ESS3-4

NGSS.HS-LS2-7

The water purification process is shown. Which letter shows the stage where chlorine is added?

• A
• B
• C
• D

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of these ways actually works to purify water?

• Put it in a Bowl and Blow on it
• Boil Water
• Run it Through a Strainer
• None of the above

Tags

NGSS.MS-PS3-4

Letter B is?

• evaporation
• transpiration
• condensation
• accumulation

Tags

NGSS.MS-ESS2-4