Water Quality and Pollution

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

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

During decomposition

• Carbon dioxide is consumed from water

• Dissolved oxygen is consumed from water

• Glucose is produced by decomposers

• Nitrogen gas is produced by decomposers

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

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

Solubility of oxygen in water _______________ as salinity of the water increases.

• increases

• decreases

• is not impacted

• increases and then levels off

To determine if an area can be classified as estuarine, the ___________________ of the water there is a primary means of classification.

• Dissolved Oxygen

• pH

• Salinity

• Turbidity

Brackish water has

• lower salinity than fresh water

• higher salinity than brine

• the same salinity as brine

• higher salinity than fresh 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