AFO (Aquatics Facilitator Operator)
Glossary Exam Questions With Correct
Answers
Acid - CORRECT ANSWER✔✔-A commonly use chemical compound
| | | | | | | |
dosed into swimming pools that releases hydrogen ions in water
| | | | | | | | | |
thereby lowering pH | |
Algae - CORRECT ANSWER✔✔-a simple nuisance plant life that
| | | | | | | | |
colonizes in water under favorable conditions
| | | | |
Alkalinity - CORRECT ANSWER✔✔-A measure of the pH-buffering
| | | | | | | |
capacity of water | |
Aluminum Sulfate - CORRECT ANSWER✔✔-Alum; a flocculating agent
| | | | | | | |
frequently used as a supplement in rapid sand filters only!
| | | | | | | | |
Ammonia (NH3) - CORRECT ANSWER✔✔-A chemical compound of
| | | | | | | |
hydrogen and nitrogen that combines with free chlorine in pools to form
| | | | | | | | | | |
chloramines, or combined chlorine.
| | | |
,Automation - CORRECT ANSWER✔✔-Electronic equipment that senses
| | | | | | |
water variables (primarliy chlorine, ORP, temperature, and pH) and
| | | | | | | | |
controls chemical feeder or heater systems to maintain desired levels.
| | | | | | | | |
Backwash - CORRECT ANSWER✔✔-The process of cleaning a swimming
| | | | | | | | |
pool filter by reversing the flow of water through it.
| | | | | | | | |
Balance - CORRECT ANSWER✔✔-In pools, use to refer to a condition of
| | | | | | | | | | | |
the water that is neither scaling nore aggressive/corrosive.
| | | | | | |
Basic - CORRECT ANSWER✔✔-Opposite of acidic, a pH condition above
| | | | | | | | | |
7.
Bleach (NaCIO) - CORRECT ANSWER✔✔-Sodium hypochlorite, usually
| | | | | | |
12% strength, "liquid chlorine" for pool use.
| | | | | |
Body Coat (Body Feed) - CORRECT ANSWER✔✔-Biatomaceous earth
| | | | | | | |
contimuously added to filter elements during the course of a filter run
| | | | | | | | | | | |
to help maintain filter efficacy and extend filter runs.
| | | | | | | |
Breakpoint (Chlorination) - CORRECT ANSWER✔✔-The point in a rising
| | | | | | | | |
chlorine residual at which the concentration of available chlorine
| | | | | | | | |
becomes great enough to oxidize most organiz matter, chloramines, and
| | | | | | | | |
, | ammonia compounds in a pool. Chlorine added thereafter will be in the
| | | | | | | | | | |
| uncombined, or free, state. | | |
Bromine (Br2) - CORRECT ANSWER✔✔-a heavy, dark-reddish-brown
| | | | | | |
liquid in the same chemical family as chlorine gas. It is sometimes used
| | | | | | | | | | | | |
as a bactericide in pools, usually in a solid-compound or salt form.
| | | | | | | | | | |
Calcification (see also Scale) - CORRECT ANSWER✔✔-Formation of
| | | | | | | |
calcium carbonate on walls of pools or pipes, or in a filter or heater, due
| | | | | | | | | | | | | | |
to precipitation of calcium carbonate.
| | | |
Calcium Hypochlorite {Ca(CIO)2} - CORRECT ANSWER✔✔-Compound of
| | | | | | |
chlorine and calcium used in white granular or tablet form as a
| | | | | | | | | | | |
disinfectant in pools. Typically, 65% chlorine by weight and a pH of ~11
| | | | | | | | | | | | |
in water.
|
Calcium Saturation Index (CSI) - CORRECT ANSWER✔✔-Derived from
| | | | | | | |
the Langelier Index, for determining water's tendency to scale or be
| | | | | | | | | | |
aggressive. Sometimes known at the LSI or SI.
| | | | | | |
Carbon Dioxide (CO2) - CORRECT ANSWER✔✔-common gas found in
| | | | | | | | |
air; exhaled in human breath. Forms of carbonic acid when dissolved in
| | | | | | | | | | | |
water and contributes to bicarbonate alkalinity when added to water,
| | | | | | | | | |
thereby lowering pH and raising alkalinity.
| | | | |
Glossary Exam Questions With Correct
Answers
Acid - CORRECT ANSWER✔✔-A commonly use chemical compound
| | | | | | | |
dosed into swimming pools that releases hydrogen ions in water
| | | | | | | | | |
thereby lowering pH | |
Algae - CORRECT ANSWER✔✔-a simple nuisance plant life that
| | | | | | | | |
colonizes in water under favorable conditions
| | | | |
Alkalinity - CORRECT ANSWER✔✔-A measure of the pH-buffering
| | | | | | | |
capacity of water | |
Aluminum Sulfate - CORRECT ANSWER✔✔-Alum; a flocculating agent
| | | | | | | |
frequently used as a supplement in rapid sand filters only!
| | | | | | | | |
Ammonia (NH3) - CORRECT ANSWER✔✔-A chemical compound of
| | | | | | | |
hydrogen and nitrogen that combines with free chlorine in pools to form
| | | | | | | | | | |
chloramines, or combined chlorine.
| | | |
,Automation - CORRECT ANSWER✔✔-Electronic equipment that senses
| | | | | | |
water variables (primarliy chlorine, ORP, temperature, and pH) and
| | | | | | | | |
controls chemical feeder or heater systems to maintain desired levels.
| | | | | | | | |
Backwash - CORRECT ANSWER✔✔-The process of cleaning a swimming
| | | | | | | | |
pool filter by reversing the flow of water through it.
| | | | | | | | |
Balance - CORRECT ANSWER✔✔-In pools, use to refer to a condition of
| | | | | | | | | | | |
the water that is neither scaling nore aggressive/corrosive.
| | | | | | |
Basic - CORRECT ANSWER✔✔-Opposite of acidic, a pH condition above
| | | | | | | | | |
7.
Bleach (NaCIO) - CORRECT ANSWER✔✔-Sodium hypochlorite, usually
| | | | | | |
12% strength, "liquid chlorine" for pool use.
| | | | | |
Body Coat (Body Feed) - CORRECT ANSWER✔✔-Biatomaceous earth
| | | | | | | |
contimuously added to filter elements during the course of a filter run
| | | | | | | | | | | |
to help maintain filter efficacy and extend filter runs.
| | | | | | | |
Breakpoint (Chlorination) - CORRECT ANSWER✔✔-The point in a rising
| | | | | | | | |
chlorine residual at which the concentration of available chlorine
| | | | | | | | |
becomes great enough to oxidize most organiz matter, chloramines, and
| | | | | | | | |
, | ammonia compounds in a pool. Chlorine added thereafter will be in the
| | | | | | | | | | |
| uncombined, or free, state. | | |
Bromine (Br2) - CORRECT ANSWER✔✔-a heavy, dark-reddish-brown
| | | | | | |
liquid in the same chemical family as chlorine gas. It is sometimes used
| | | | | | | | | | | | |
as a bactericide in pools, usually in a solid-compound or salt form.
| | | | | | | | | | |
Calcification (see also Scale) - CORRECT ANSWER✔✔-Formation of
| | | | | | | |
calcium carbonate on walls of pools or pipes, or in a filter or heater, due
| | | | | | | | | | | | | | |
to precipitation of calcium carbonate.
| | | |
Calcium Hypochlorite {Ca(CIO)2} - CORRECT ANSWER✔✔-Compound of
| | | | | | |
chlorine and calcium used in white granular or tablet form as a
| | | | | | | | | | | |
disinfectant in pools. Typically, 65% chlorine by weight and a pH of ~11
| | | | | | | | | | | | |
in water.
|
Calcium Saturation Index (CSI) - CORRECT ANSWER✔✔-Derived from
| | | | | | | |
the Langelier Index, for determining water's tendency to scale or be
| | | | | | | | | | |
aggressive. Sometimes known at the LSI or SI.
| | | | | | |
Carbon Dioxide (CO2) - CORRECT ANSWER✔✔-common gas found in
| | | | | | | | |
air; exhaled in human breath. Forms of carbonic acid when dissolved in
| | | | | | | | | | | |
water and contributes to bicarbonate alkalinity when added to water,
| | | | | | | | | |
thereby lowering pH and raising alkalinity.
| | | | |
