water

What is the first step in the water treatment process?

• coagulation
• filtration
• flocs
• concentation

What does chlorination do to the water?

• Removes microorganisms
• Cleans the water
• Makes the water taste nice
• Removes twigs and sediment

Approximately what percentage of Earth's water is SALT water?

• 97 %
• 71%
• 30%
• 3%

This is a picture of....

• aeration

• chlorination

• filtering

• irrigation

When is fluoride added in water treatment?

• First step, before filtering

• Second step, with the alum

• In the middle of the treatment

• Next to the last step, just before it gets to your home

Where is most of the freshwater found on Earth?

• lakes
• glaciers
• oceans
• rivers

Which human activity has the most negative impact on water quality?

• agriculture

• flushing toilets

• washing clothes

• recreational boating

What word means the solid particles that have settled out during the sedimentation process.

• sediment
• solubility
• settlement
• solidifying

What is the purpose of using ultraviolet light on the water?

• To bleach it out

• To "sterilize" any bacteria

• To remove chlorine

• To kill viruses

A factory is located next to a river.  The factory has a sewage pipe running straight out of the factory and into the river.  This is an example of ________________________.

• point source pollution
• non-point pollution
• tertiary receiving stream
• primary treatment