Science Earth Science
CPO PRACTICE PROBLEMS EXAM QUESTIONS AND ALL CORRECT ANSWERS 100%
SOLVED AND GUARANTEED SUCCESS!!
1. The three most commonly used filter media are: 1. The three most commonly used filter media are:
A) Sand, Alum & Floc B) TV, Radio & Newspaper
C) Sand, D. E., & Cartridge D) Calcium, Iron & Copper 1. C) Sand, D. E., & Cartridge Although many filter media alternatives are now being used,
these are by far, the most commonly used.
2. Calcium Hardness should be ideally maintained between: 2. D) 200 - 400 ppm is the ideal range for Calcium Hardness. An acceptable range varies
A) 0 - 100 ppm B) 80 - 120 ppm between 100-150 on the low end, up to 500 or even 1000+ in some cases.
C) 1.0 - 3.0 ppm D) 200 - 400 ppm
3. Spa filtration and recirculation pumps should operate: 3. A) 24 hours continuously . The NSPF® Pool & Spa Operator™ Handbook and most state
A) 24 hours continuously. B) 12 hours at a time. codes require that pumps run continually for commercial pools.
C) Only when in use. D) In 30 minute intervals.
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, 4. If chlorine gets on your skin or in your eyes, you should: 4. B) Flush with clean water for 15 minutes If still irritated, continue to flush with clean
A) Attempt to neutralize it with another chemical. water until medical personnel arrives.
B) Flush with clean water for 15 minutes.
C) Wash it off with soap and water.
D) Jump in the pool and stay underwater till rescue squad
arrives.
FORMULAS
Surface Area (Circle): Radius x Radius x 3.14 (Radius = Diameter
/ 2)
Surface Area (Rectangle/Square): Length x Width
Volume (Circle/Rectangle/Square): Surface Area x Average
Depth x 7.5
Average Depth: (Shallow Depth + Deep Depth) ÷ 2 (Note:
Constant Depth = Average Depth)
A rectangular pool is 50 feet long by 20 feet wide. The shallow Surface Area = Length x Width
end is 3 feet deep and the deep end is 7 feet deep. Find the Surface Area = 50 feet x 20 feet
surface area and the volume. Surface Area = 1,000 square feet
Volume = Surface Area x Average Depth x 7.5
Volume = 1,000 x Average Depth x 7.5
Average Depth = (Shallow Depth + Deep Depth) ÷ 2
Average Depth = (3 + 7) ÷ 2
Average Depth = 10 ÷ 2
Average Depth = 5
Volume = 1,000 x 5 x 7.5
Volume = 37,500 Gallons
1) A rectangular pool is 60 feet long by 30 feet wide. The 1. Surface Area = 1,800 square feet Volume = 81,000 Gallons
shallow end is 4 feet deep and the deep end is 8 feet deep.
Find the surface area and the volume.
2) A circular spa has a 10 foot diameter and a constant depth 2. Surface Area = 78.5 square feet Volume = 2,355 Gallons
of 4 feet deep. Find the surface area and the volume.
2/6
CPO PRACTICE PROBLEMS EXAM QUESTIONS AND ALL CORRECT ANSWERS 100%
SOLVED AND GUARANTEED SUCCESS!!
1. The three most commonly used filter media are: 1. The three most commonly used filter media are:
A) Sand, Alum & Floc B) TV, Radio & Newspaper
C) Sand, D. E., & Cartridge D) Calcium, Iron & Copper 1. C) Sand, D. E., & Cartridge Although many filter media alternatives are now being used,
these are by far, the most commonly used.
2. Calcium Hardness should be ideally maintained between: 2. D) 200 - 400 ppm is the ideal range for Calcium Hardness. An acceptable range varies
A) 0 - 100 ppm B) 80 - 120 ppm between 100-150 on the low end, up to 500 or even 1000+ in some cases.
C) 1.0 - 3.0 ppm D) 200 - 400 ppm
3. Spa filtration and recirculation pumps should operate: 3. A) 24 hours continuously . The NSPF® Pool & Spa Operator™ Handbook and most state
A) 24 hours continuously. B) 12 hours at a time. codes require that pumps run continually for commercial pools.
C) Only when in use. D) In 30 minute intervals.
1/6
, 4. If chlorine gets on your skin or in your eyes, you should: 4. B) Flush with clean water for 15 minutes If still irritated, continue to flush with clean
A) Attempt to neutralize it with another chemical. water until medical personnel arrives.
B) Flush with clean water for 15 minutes.
C) Wash it off with soap and water.
D) Jump in the pool and stay underwater till rescue squad
arrives.
FORMULAS
Surface Area (Circle): Radius x Radius x 3.14 (Radius = Diameter
/ 2)
Surface Area (Rectangle/Square): Length x Width
Volume (Circle/Rectangle/Square): Surface Area x Average
Depth x 7.5
Average Depth: (Shallow Depth + Deep Depth) ÷ 2 (Note:
Constant Depth = Average Depth)
A rectangular pool is 50 feet long by 20 feet wide. The shallow Surface Area = Length x Width
end is 3 feet deep and the deep end is 7 feet deep. Find the Surface Area = 50 feet x 20 feet
surface area and the volume. Surface Area = 1,000 square feet
Volume = Surface Area x Average Depth x 7.5
Volume = 1,000 x Average Depth x 7.5
Average Depth = (Shallow Depth + Deep Depth) ÷ 2
Average Depth = (3 + 7) ÷ 2
Average Depth = 10 ÷ 2
Average Depth = 5
Volume = 1,000 x 5 x 7.5
Volume = 37,500 Gallons
1) A rectangular pool is 60 feet long by 30 feet wide. The 1. Surface Area = 1,800 square feet Volume = 81,000 Gallons
shallow end is 4 feet deep and the deep end is 8 feet deep.
Find the surface area and the volume.
2) A circular spa has a 10 foot diameter and a constant depth 2. Surface Area = 78.5 square feet Volume = 2,355 Gallons
of 4 feet deep. Find the surface area and the volume.
2/6
