Johnson 4,5,6

What is the purpose of testing water quality?

• To find out the temperature of the water only.

• To monitor changes in water quality and take action to improve it.

• To increase the salinity levels in the water.

• To decrease the number of macroinvertebrate organisms.

Which of the following is NOT a common measure of water quality?

• pH level

• Temperature

• Taste of water

• Salinity

How can regular testing of water quality help us?

• It allows us to ignore the changes in water quality.

• It helps in identifying the presence of harmful chemicals only.

• It helps us understand the health of water sources and take necessary actions.

• It decreases the number of pollutants and toxic substances automatically.

Turbidity measures the cloudiness of water. How can high turbidity impact an aquatic ecosystem? Choose two correct answers.

• It increases the salinity levels in the water.

• It tells us there are harmful chemicals in the water.

• It reduces sunlight in the water.

• It negatively affects plant growth.

Why is it important to test the pH of water?

• Higher pH levels increase the turbidity of the water.

• Lower pH levels indicate the presence of harmful bacteria.

• Extremely high or low pH levels can cause the death of aquatic organisms.

• pH has no impact on the health of aquatic ecosystems.

If macroinvertebrates no longer appear in samples taken from a water source, what could this indicate?

• The water source is polluted.

• The aquatic plants in the water are healthy.

• The pH of the water is in a healthy range.

• The turbidity of the water has not changed.

What are blue crabs classified as in the context of factors of a watershed?

• Abiotic

• Biotic

• Inorganic

• Non-living

What category does sunlight fall into when considering factors of a watershed?

• Biotic

• Abiotic

• Organic

• Living

Are dead fish considered abiotic or biotic factors in a watershed?

• Abiotic

• Biotic

• Inorganic

• Non-living

Which category does bay grass belong to in the context of watershed factors?

• Abiotic

• Biotic

• Inorganic

• Non-living