bio indicators water quality

Multiple Choice

Surfaces through which water cannot flow

• pervious surfaces

• impervious surfaces

Multiple Choice

Which land surface has the most infiltration (absorption)?

• Developed High

• Developed Low

• Forest

• Wetlands

Multiple Choice

Pollution traced to a single point

• water shed

• permeable

• point source pollution

• non-point source pollution

Multiple Choice

The Portion of water that flows across the surface that does not soak into the ground and runs into water bodies

• what

• fertilizer

• erosion

• runoff

Multiple Choice

Pollution that cannot be traced to a single point because comes from many sources

• estuary

• water shed

• non point source pollution

• point source pollution

Multiple Choice

What is a significant impact of water pollution on ecosystems?

• Increased plant growth due to fertilizer runoff

• Decreased biodiversity in aquatic habitats

• Enhanced water filtration

• Increased atmospheric oxygen

Multiple Choice

What is a riparian buffer?

• A zone of vegetation around a waterway.

• A zone of concrete that channels a waterway to prevent flooding.

• A zone of pasture land where animals can contribute manure and other nutrients to the water.

• A zone of water inside a forest or grassland.

Multiple Choice

What are sources of water pollution?

• Precipitation as Acid rain
• Runoff water & Groundwater
• Industry & Household waste
• All of these

Multiple Choice

A farmer applies excess fertilizer to one of her fields just before a rainstorm. What kind of pollution is this most likely to lead to?

• Toxic

• Sediment

• Nutrient

• Bacterial

Multiple Choice

Why is arsenic contamination difficult to monitor?

• It shows few symptoms.

• It is present everywhere.

• It is odorless and tasteless.

Multiple Choice

Which is an example of nonpoint source pollution?

• Oily runoff from from several nearby towns into a lake

• Polluted drainage water from a factory

• Oil that spills from a tanker

• Gasoline dumped from a boat

Multiple Choice

Turbidity measurements were taken at different distances from the shore of a lake.

Which best explains why the turbidity increases as water samples are taken closer to the shore?

• Shoreline erosion causes sediment to wash into the lake.

• Sediment is carried from the middle of the lake to the shore by wind.

• Swimmers stir up sediment by splashing in the water near the shore.

• Fish stir up sediment while feeding on plants that grow close to the shore.

Multiple Choice

High turbidity means.....

• very clear water
• neutral pH
• very murky or cloudy water
• high nitrates

Multiple Choice

How does acid rain affect the pH of a stream or lake?

• The pH decreases.
• The pH increases.
• Acid rain does not affect pH.
• It causes an explosion.

Multiple Choice

Macroinvertebrates such as stoneflies, mayflies and water boatmen require high levels of dissolved oxygen and their abundance is an indication of:

• Poor water quality
• Good water quality
• Don't tell us anything about water quality
• Invertibrates don't tell us anything about water quality

Multiple Choice

An estuary is best defined as a place where

• fresh and salt water meet.

• a river meets a lake.

• a group of animals are gathered.

• the water from the land flows into a river.

Multiple Choice

When salt and fresh water mix, what is the new water substance called?

• Brackish Acid
• Fresh Water
• Salt Water
• Brackish Water

Multiple Choice

True or False:

Estuaries are one of the most productive Ecosystems/Biomes in the world.

• False

• True

Multiple Choice

Why are estuaries important to our environment?

• Estuaries filter pollutants

• Estuaries provide nurseries for marine life

• Estuaries act as home for many wildlife

• All of the other choices are good

Multiple Choice

What is one way we can protect wetlands and estuaries?

• Not polluting in our river basin

• Dumping chemicals down drains

• Littering in waterways

• Washing a car in a driveway instead of a car wash