Aquaculture Water Quality Quiz

What are the primary considerations for any aquaculture facility according to the text?

• Water temperature and light

• Water quality and quantity

• Type of aquaculture species and feed

• Disease prevention methods

What does water serve as for fish, shellfish, and crustaceans?

• Only a source of oxygen

• Only a habitat

• An excretory site and helps regulate body temperature

• A source of light

What is the most common unit of measure for trace elements, gases, ions, and pesticides in water quality management?

• Parts per million (ppm)

• Milligrams per liter (mg/l)

• Micrograms per liter (µg/l)

• Grains per gallon (gpg)

Positive ions are referred to as:

• Anions

• Cations

• Salts

• Contaminants

Negative ions or anions are substances like:

• Carbonate and bicarbonate

• Calcium and potassium

• Magnesium and sodium

• Hydrogen and oxygen

Which of the following is not a characteristic of water in its pure substance form?

• It consists of hydrogen and oxygen

• It contains a number of dissolved and suspended substances

• It is particularly muddy

• It is a pure substance

Salts in water form from the combination of:

• Cations and anions

• Hydrogen and oxygen

• Contaminants and organic matter

• Acids and bases

What is the expression "milliequivalents per liter" (meq/l) used for in water quality management?

• To measure the concentration of heavy metals

• To measure the water hardness

• To measure the concentration of salts

• To measure the acidity or alkalinity of water

What is the pH scale a measure of in water tests?

• The amount of chlorine

• The measure of hydrocarbon ions

• The measure of hydrogen ions

• The temperature of the water

What is considered a neutral pH value?

• 0

• 5

• 7

• 14