WSS CHAPTER #4 EXAM QUESTIONS
AND ANSWERS
Glacial ice covers approximately 10% to 11% of all land surfaces. - Answer-True
When there is enough water in the soil to displace all of the air in the soil spaces, the
soil becomes saturated and is called the watershed. - Answer-False
Gray water is water that does not come into contact with fecal or organic matter. -
Answer-True
Rainwater is water from natural precipitation that has not been contaminated by use. -
Answer-True
Private water systems serve no more than 60 people. - Answer-False
A well casing is a tubular shaft placed in a well hole to maintain the well structure. -
Answer-True
The ideal location of an impounding reservoir is at a level higher than the treatment
facility and water distribution system so that gravity can be used to create pressure
throughout the system. - Answer-True
The pH scale ranges from 0 to 10 in which 5 is neutral, less than 5 is acidic, and more
than 5 is alkaline or basic. - Answer-False
Coagulation is the settling of solids in raw water as it goes through impounding
reservoirs or other holding areas on its way to a water treatment plant. - Answer-False
___ is the transition of a substance directly from the solid to the gas phase without
passing through the intermediate liquid phase. - Answer-Sublimation
A ___ is a considerable inland body of standing water. - Answer-Lake
Reclaimed water is most commonly used as ___ water. - Answer-irrigation
___ water is wastewater from fixtures that comes in contact with or contains fecal matter
or food solids. - Answer-Black
___ storm water harvesting uses earthworks, land shaping, or other earth-related
techniques and structures to direct, concentrate, and infiltrate storm water into the soil
for beneficial uses such as plant uptake and groundwater recharge. - Answer-Passive
AND ANSWERS
Glacial ice covers approximately 10% to 11% of all land surfaces. - Answer-True
When there is enough water in the soil to displace all of the air in the soil spaces, the
soil becomes saturated and is called the watershed. - Answer-False
Gray water is water that does not come into contact with fecal or organic matter. -
Answer-True
Rainwater is water from natural precipitation that has not been contaminated by use. -
Answer-True
Private water systems serve no more than 60 people. - Answer-False
A well casing is a tubular shaft placed in a well hole to maintain the well structure. -
Answer-True
The ideal location of an impounding reservoir is at a level higher than the treatment
facility and water distribution system so that gravity can be used to create pressure
throughout the system. - Answer-True
The pH scale ranges from 0 to 10 in which 5 is neutral, less than 5 is acidic, and more
than 5 is alkaline or basic. - Answer-False
Coagulation is the settling of solids in raw water as it goes through impounding
reservoirs or other holding areas on its way to a water treatment plant. - Answer-False
___ is the transition of a substance directly from the solid to the gas phase without
passing through the intermediate liquid phase. - Answer-Sublimation
A ___ is a considerable inland body of standing water. - Answer-Lake
Reclaimed water is most commonly used as ___ water. - Answer-irrigation
___ water is wastewater from fixtures that comes in contact with or contains fecal matter
or food solids. - Answer-Black
___ storm water harvesting uses earthworks, land shaping, or other earth-related
techniques and structures to direct, concentrate, and infiltrate storm water into the soil
for beneficial uses such as plant uptake and groundwater recharge. - Answer-Passive
