Chemical Water Tests Quiz

What do results from chemical water tests indicate?

• The presence of all types of pollutants in the water

• The effectiveness of water filters

• The specific chemicals tested and not about other pollutants

• The biological content of the water

What is the impact of high water temperatures on the solubility of oxygen in river ecosystems?

• High temperatures decrease oxygen solubility

• High temperatures increase oxygen solubility

Which temperature range is lethal to trout, salmon, and many aquatic insects? (slide 4)

• <13°C

• 13-20°C

• 20-25°C

• >25°C

Which temperature range is suitable for cold-water species such as trout, mayflies, caddisflies, and stoneflies? (slide 4)

• <13°C

• 13-20°C

• 20-25°C

• >25°C

At what temperature range is it suitable for most other fish, invertebrates, and warm water species? (slide 4)

• <13°C

• 13-20°C

• 20-25°C

• >25°C

What is the pH range of water that is considered neutral? (slides 6-7)

• 0-7

• 7-14

• 6.5-8.5

• 7

Which pH range is suitable for most aquatic animals? (slide 6)

• 0-4.0

• 4.5-6.5

• 6.5-8.5

• 5.0-9.0

What can cause the pH of rivers, lakes, and ponds to be buffered (similar to the Chicago River)?

• Acid rain

• Mining

• Limestone bedrock

• Pollution

What is the significance of the pH value in water bodies? (slide 6)

• It indicates the temperature of the water.

• It indicates the potential of Hydrogen atoms in the water.

• It indicates the salinity of the water.

• It indicates the depth of the water.

Which pH range is severely stressful for aquatic life? (slide 6)

• 0-4.0

• 4.0-4.5

• 4.5-6.5

• 5.0-9.0