Water Quality

Which statement is true?

• Less than 1% of Earth's water is freshwater.

• Most of Earth's water is freshwater.

• There is the same amount of freshwater as saltwater on Earth.

Which of the following lists of products all require water to produce?

• Blue jeans, paper, gasoline, hamburger

• Apples, milk, bread, computer

• All of the above

What is a watershed?

• All of the land area that drains water to a lake or river

• A drainage basin

• All of the above

Which of the following BMPs can protect water quality?

• Paving the area next to rivers

• Leaving a strip of vegetation near rivers and lakes

• Washing your car on pavement

Which of the following can contaminate drinking water?

• Animal wastes

• Leaking gasoline storage tanks

• All of the above

Which statement best describes how water quality standards are used?

• There are different water quality standards depending upon the intended use of the water (i.e. boating, fishing, drinking, etc.)

• Water quality standards make sure that all water is clean enough to drink

• Water quality standards ensure that humans will not be affected by pollution

Which of the following is the best way to determine the health of a stream?

• Measuring the pH and temperature of the water

• Count the number of plants growing near the stream

• Count the number of macroinvertebrates in the water

If you find only pollution-tolerant macroinvertebrates in a steam, what does that indicate (show)?

• Fish ate all the pollution-sensitive macroinvertebrates

• The water quality of the stream has been degraded (made worse)

• You can drink the water

If there's the same amount of rain on each of the following types of land cover, which would cause the most runoff?

• A wetland

• A parking lot

• A field of corn

Why are people encouraged to limit the amount of Great Lakes fish consumed (eaten)?

• Over-fishing is a big problem in the Great Lalkes

• We need to leave enough fish for other predators to eat

• Pollutants that bioaccumulate in fish can affect human healthy