Water Quality Quiz

Which of the following is an abiotic factor that can affect the health of a watershed system?

• Fish

• Temperature

• Trees

• Bacteria

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VA.6.8.d

What is the main source of oxygen in a healthy aquatic ecosystem?

• Rocks

• Photosynthesis by aquatic plants

• Soil erosion

• Human waste

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VA.6.8.d

Which human activity is most likely to increase water pollution in a watershed?

• Planting trees

• Dumping chemicals into rivers

• Building birdhouses

• Walking on a trail

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VA.6.8.d

Which of the following is a biotic factor in a watershed?

• Sunlight

• Water

• Algae

• Rocks

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VA.6.8.d

Which of these is a safety issue related to contaminated water?

• Slippery floors

• Waterborne diseases

• Loud noises

• Broken glass

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VA.6.9.c

A factory is built near a river and starts releasing waste into the water. Which of the following is a likely consequence for the watershed?

• Increased fish population

• Decreased water quality

• More rainfall

• Cleaner water

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VA.6.8.d

If a watershed has too many nutrients from fertilizers, what might happen to the aquatic life?

• Fish will grow larger

• Algae blooms may occur, reducing oxygen for fish

• Water will become clearer

• Rocks will dissolve

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VA.6.8.d

A community wants to improve the health of its local watershed. Which action would be most effective?

• Reducing the use of pesticides and fertilizers

• Building more roads

• Cutting down trees near streams

• Increasing industrial waste

Tags

VA.6.8.d

A student observes that after a heavy rain, the river water becomes muddy and fish are less active. What is the most likely explanation?

• Increased sunlight

• Soil erosion has increased sediment in the water, affecting fish

• The water is colder

• There are more plants

Tags

VA.6.8.d

Given a scenario where a watershed is experiencing frequent fish deaths, how would you determine if the cause is due to abiotic or biotic factors?

• Guess the cause

• Test water for pollutants and check for disease in fish

• Only look at the weather

• Count the number of trees

Tags

VA.6.8.d