Envirochemistry Review #2

which one of the following terms describes the image

• acidity

• turbidity

• nitrates

• temperature

Which of the rivers has the best water quality?

• Kissimmee river

• peace river

• tamiami river

As acidity increases,

• water quality increases

• water quality decreases

• water quality does not change

We used bioindicators to measure the quality of water.  What is a bioindicator?

• any living creature
• eutrophication
• An organism sensitive to its environment
• pH paper

Tags

NGSS.MS-LS2-4

What is the healthiest combination listed?

• low pH, high nitrates, neutral temperature
• low temperature, neutral pH and low nitrates
• as many nitrates as possible, low temp and low pH
• high temp, high nitrates and high pH

Tags

NGSS.MS-LS1-5

How does increasing nitrates impact stream health?

• excess algae
• increased oxygen
• increased water clarity

Which water quality indicator will be most impacted by burning fossil fuels and air pollution?

• nitrates
• pH (water will be more acidic)
• Dissolved oxygen
• turbidity

Tags

NGSS.MS-ESS3-3

More dissolved oxygen in the water will lead to

• more diversity of organisms.
• a higher pH.
• more turbidity.
• a higher temperature.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

You sample a stream and find the following:
∎19 leeches
∎7 freshwater worms
∎8 midge larvae
∎15 mosquito larvae
What can you determine about the health of the stream?

• The stream is extremely healthy and has little to no pollution.
• They stream has some pollution.
• The stream is extremely unhealthy and heavily polluted.
• There is no way to determine how healthy this stream is based on this information.

If there is a large variety of living organisms in and around a water supply, then could the water supply be considered healthy?

• No, because it contains nitrates.

• No, because it contains living organisms.

• Yes, because it contains bioindicators, which are used to assess the health of a water supply.

• Yes, because it contains nitrates, which are used to assess the health of a water supply.

Tags

NGSS.MS-LS2-4