Water quality and pollution quiz

Which of these is NOT a factor that affects water quality?

• pH

• Temperature

• Salinity

• Turbidity

• Dissolved CO₂

Oxygen gets into bodies of water from two sources:

• the atmosphere (from photosynthetic organisms on land) and from photosynthetic organisms in water

• the sediments that have broken down in the water and from the process of cellular respiration

• the breakdown of H₂O within the body of water and the weathering of rocks

• the processes of deposition and sublimation in the water cycle

Running water dissolves more oxygen than still water

• True

• False

Salinity of a body of water is an indicator of the

• Turbidity of the body of water

• pH of the body of water

• Pollution within the body of water

• Conductivity of the body of water

A pH of 12 is

• a strong acid

• a strong base

• a weak acid

• a weak base

• neutral

A pH of 6 is

• a strong acid

• a strong base

• a weak acid

• a weak base

• neutral

Strong bases are not as damaging to living things as strong acids.

• True

• False

High turbidity does not always mean poor water quality.

• True

• False

Muddy water has

• low pH

• high turbidity

• low salinity

• high temperature

Warm water holds __________ dissolved oxygen than cool water.

• more

• less

• the same

• none of these