Water!

presence of abnormally high concentrations of harmful substances in the environment, often put there by people

• Pollution
• Pollutant
• Water Quality
• Turbidity

What is C?

• Evaporation
• Condensation
• Precipitation
• Runoff

Where is most of the freshwater found on Earth?

• lakes
• glaciers
• oceans
• rivers

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

• 97 %
• 71%
• 30%
• 3%

How could pesticides get into lakes and streams?

• too much could be used
• it could be sprayed too close to a stream
• rain could wash pesticides into a stream
• all of the above

If gasoline or oil or trash goes into a storm drain in the street, it goes directly...

• to the sewage treatment plant
• into the stream
• to groundwater
• none of the above

Which government agency is responsible for monitoring the safety of our drinking water?

• Food and Drug Administration. (FDA)
• Center for Disease Control (CDC)
• National Oceanic and Atmospheric Administrations (NOAA)
• Environmental Protection Agency (EPA)

Which is an effect of chlorine in water?

• kills the microorganisms
• improves the taste
• aerates the water

Why is filtration an important part of water treatment?

• Filtration guarantees a clear coloring in water.
• Filtration removes small particles from the water.
• Filtration adds chlorine to water to kill microorganisms.
• Filtration adds vitamins and minerals to drinking water.

Which word means "safe to drink?"

• Hardness
• Potable
• Clear
• Turbidity