WorksheetsSmedes 8.5 Eutrophication: An Environmental Science Quiz
Total questions: 1
Worksheet time: 18mins
1-10.
Answer the questions below after watching the video
What are the primary nutrients that initiate eutrophication?
Carbon and Calcium
Sulfur and Potassium
Nitrogen and Phosphorus
Iron and Magnesium
What is the immediate ecological effect of an algae bloom in aquatic systems?
Reduction of algae population
Blockage of sunlight to lower plants
Decrease in water acidity
Increase in aquatic plant life
What is a positive feedback loop in the context of eutrophication?
A process that stabilizes the ecosystem
A beneficial cycle that enhances water quality
A feedback mechanism that reduces pollutants
A cycle that exacerbates the condition leading to more damage
What does the term 'cultural eutrophication' specifically refer to?
Eutrophication caused by natural processes
Human-induced nutrient pollution leading to eutrophication
Cultural practices unrelated to pollution
Biological cultures contributing to nutrient levels
Which facility is a major contributor to nutrient pollution despite treatment processes?
Fisheries
Hydroelectric plants
Wastewater treatment plants
Bottling facilities
How do heavy rain events affect wastewater treatment facilities?
They improve the efficiency of the facilities
They have no effect on the facilities
They can cause overflows leading to pollution
They decrease the amount of wastewater
What is the primary cause of dead zones in aquatic environments?
High temperatures only
Overfishing in the area
Low dissolved oxygen levels
Excessive sunlight
What happens to aquatic life when dissolved oxygen levels are critically low?
No significant change
Aquatic life cannot be supported
Massive increase in algae
Aquatic life thrives
Which term describes water bodies with low nutrient levels and high dissolved oxygen?
Eutrophic
Mesotrophic
Oligotrophic
Hypoxic
What natural process can lead to eutrophication in lakes and ponds over time?
Decrease in aquatic vegetation
Introduction of exotic species
Sediment accumulation and nutrient release
Evaporation of water
