Environmental Chemistry 9 - Practice Quiz
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Circles O = multiple choiceSquares [ ] = choose multiple answersREAD THE QUESTIONS CAREFULLY!
- 1.What can indicate healthy levels of chemicals in the water?
- A.
PH lower than 5
- B.
PH higher than 5.6
- C.
Dissolved oxygen higher than 5
- D.
High levels of nitrogen and phosphorus
- 2.2 biological indicators are...
- A.
PH level and invertebrates
- B.
Microbiological and aquatic invertebrates
- C.
PH level and acidity
- D.
None
- 3.Find the six chemical factors that are most commonly used as water quality indicators.
- A.
Acidity (pH)
- B.
Types of fish and plants
- C.
Dissolved Oxygen levels
- D.
Plant nutrients
- E.
Nitrogen and Phosphorus levels
- F.
Salts
- G.
Heavy Metals
- H.
Pesticides
- 4.Which is the fourth factor that can affect dissolved oxygen levels in water?1. Turbulence2. Temperature3. Number of organisms4. ???
- A.
Density of dissolved minerals can affect the concentration of the oxygen levels
- B.
Amount of dissolved CO2
- C.
PH level
- D.
Photosynthesis from plants
- E.
None of the above
- 5.Livable Dose 50 is what it takes to kill 50% of a set amount of population by a toxin.
- A.
True
- B.
False
- 6.What is so special about:MercuryCopperLeadZincCadmiumNickel
- A.
The density is 5g/cubic cm (heavy metals)
- B.
They weigh the water down
- C.
It is a toxic metal
- D.
The density is 5mg/cubic cm (heavy metals)
- 7.What is a scrubber?
- A.
It uses limestone neutralize chemicals
- B.
It is used to reduce emissions
- C.
It uses limestone to "clean" the SO2
- D.
It uses limestone to filter the CO2
- 8.What are the 5 purposes of water?
- A.
Recreation, Drinking water, Irrigation, Protect aquatic life, and livestock drinking water.
- B.
Cleansing, Recreation, Drinking water, Irrigation, other uses
- C.
Energy, Cleansing, Drinking water, recreation, irrigation
- D.
Cleansing, Drinking water, aquatic life, livestock drinking water, energy
- 9.As chemicals are transferred throughout the food chain, the chemical's concentration will increase. This is because the amount of chemicals are multiplied as animals eat more of the other animals that carry the chemical. This is known as:
- A.
Bioaccumulation
- B.
Bioconcentration
- C.
Biomagnification
- D.
Biochemical Deposition
- 10.Which is worse?
- A.
Greenhouse effect
- B.
Enhanced greenhouse effect
- 11.Which three are the stages that transport substances through the air?
- A.
Release
- B.
Deposition
- C.
Dispersion
- D.
Evaporation
- 12.Which 4 factors affect the distribution of chemicals in the air?
- A.
Air quality
- B.
Wind speed
- C.
Chemical Properties
- D.
Wind direction
- E.
Temperature
- F.
Precipitation
- 13.Which ones are correct?
- A.
Permeable means substances can move easily through it
- B.
Permeable means that certain substances can move through
- C.
Permeable means that nothing can pass through
- D.
Impermeable means that it is very difficult or can barely pass through it
- 14.Leachate is the combination of a liquid and the substance it moves along.When does this occur?
- A.
Dissolving in water
- B.
Reducing the concentration of a substance
- C.
Transporting water in soil
- D.
All of the above
- 15.Which five processes are used to decrease the concentration of chemicals in an environment?
- A.
Dilution
- B.
Diffusion
- C.
Dispersion
- D.
Biodegrade
- E.
Deposition
- F.
Photolysis
- G.
Phytoremediation
- H.
PH level flux
- 16.Hydrolysis is used to break down substances using water AND can be used in biodegrading to get carbon for carbohydrates and proteins.THIS CAN BE USED IN OUR BODIES...
- A.
True
- B.
False
- 17.What are four ways that water moves through soil?
- A.
Groundwater
- B.
Evaporate
- C.
Biodegrading
- D.
Runoff
- E.
Absorb
- F.
Pores
- G.
Rivers and streams
- H.
Leachate
- 18.How can substances be transported into surface water?
- A.
Precipitation, Condensation, Snow
- B.
Air, Groundwater, Runoff, Outflow
- C.
Precipitation, Groundwater, Rivers, Streams, and Lakes
- 19.Flow of water is better when substances are more dissolved or have higher concentration.
- A.
True
- B.
False
- 20.Which affect the rate of biodegration?
- A.
Temperature
- B.
Soil moisture
- C.
PH levels
- D.
Neutrality
- E.
Nutrient Availability
- F.
Amount of bacteria
- G.
Oxygen
- 21.Do bioreactors affect the biodegration rate?
- A.
True
- B.
False
- 22.Planting vegetation will help biodegration because there will be a larger population of bacteria.
- A.
True
- B.
False
- 23.The previous two questions talk about more things that may affect biodegration rate....
- A.
True
- B.
False
- 24.Why are chlorofluorocarbons harmful?
- A.
One bromine atom can remove 10,000 nitrogen atoms from the air we breath.
- B.
They can destroy the greenhouse gases that keeps us warm.
- C.
They can destroy the ozone layer because of the bromine and chlorine.
- D.
They destroy the ozone layer because of the fluoride, carbon, and chlorine.
- 25.Choose the greenhouse gases.
- A.
Thick ozone layer.
- B.
Ground level ozones.
- C.
Sulfur Dioxide.
- D.
Carbon Monoxide.
- E.
Hydrogen Sulfide.
- F.
Nitrogen Dioxide.
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