What is graywater?(1 point)

Question

Responses

wastewater generated from outdoor household usage
wastewater generated from outdoor household usage

household wastewater that does not contain surfactants
household wastewater that does not contain surfactants

household wastewater except for the wastewater from toilets
household wastewater except for the wastewater from toilets

wastewater generated from all indoor household usage
wastewater generated from all indoor household usage
Question 2
Compared to conventional farming, which of the following are benefits of aquaponics systems?

Choose the correct TWO

(1 point)
Responses

potential failure points
potential failure points

total water usage
total water usage

initial setup cost
initial setup cost

productivity per square foot
productivity per square foot
Question 3
Which of the following supports the idea that aquaponics helps reduce the impact of human activities on the environment?(1 point)
Responses

Only certain types of fish can be used in aquaponics.
Only certain types of fish can be used in aquaponics.

Aquaponics systems use a great deal of water.
Aquaponics systems use a great deal of water.

The installation and maintenance of equipment requires an investment of money.
The installation and maintenance of equipment requires an investment of money.

Reuse of fish waste reduces the use of fertilizers.
Reuse of fish waste reduces the use of fertilizers.
Question 4
Which of the following occurred because of Flint's water crisis?

Select the TWO correct answers.

(1 point)
Responses

City and state officials immediately alerted residents of widespread danger.
City and state officials immediately alerted residents of widespread danger.

General Motors stopped using Flint's water due to corrosion of their machinery.
General Motors stopped using Flint's water due to corrosion of their machinery.

Dozens of people contracted a form of pneumonia know as Legionnaires' disease.
Dozens of people contracted a form of pneumonia know as Legionnaires' disease.

Rates of cancer skyrocketed among adults Flint.
Rates of cancer skyrocketed among adults Flint.
Question 5
What caused the change in water quality in Flint, Michigan?(1 point)
Responses

City officials ignored the Clean Water Act and allowed wastewater to be dumped into the river.
City officials ignored the Clean Water Act and allowed wastewater to be dumped into the river.

The city was taken off the Detroit water system to save money.
The city was taken off the Detroit water system to save money.

City officials decided to stop fully treating the water to save money.
City officials decided to stop fully treating the water to save money.

The Flint River became contaminated which caused lead to get into the water.
The Flint River became contaminated which caused lead to get into the water.
Question 6
Which data help hydrologists predict floods?

Select the TWO correct answers.

(1 point)
Responses

water temperature
water temperature

impermeable land area
impermeable land area

dissolved oxygen
dissolved oxygen

nitrate levels
nitrate levels

snowpack
snowpack
Question 7
What clean water regulation establishes the basic structure for regulating discharges of pollutants into the waters of the United States and regulating quality standards for surface waters? (1 point)
Responses

U.S. Federal Water Law
U.S. Federal Water Law

Safe Drinking Water act
Safe Drinking Water act

Environmental Protection Agency
Environmental Protection Agency

Clean Water Act
Clean Water Act
Question 8
Which of the following courses should a student take in order to become a hydrologist?

Choose the best TWO answers.

(1 point)
Responses

philosophy
philosophy

life science
life science

physical science
physical science

statistics
statistics

coding
coding
Question 9
Which of the following water filtration methods requires the use of a membrane or filter?(1 point)
Responses

ultraviolet radiation
ultraviolet radiation

chlorination
chlorination

reverse osmosis
reverse osmosis

distillation
distillation
Question 10
Which best describes the Clean Water Act?

Mark TRUE the ones that are TRUE and False the ones that are False and instead describe the Safe Drinking Water Act.

(1 point)
True False
regulates pollutants discharged into surface waters

covers both surface and ground waters

funds sewage treatment plants

authorizes the EPA to establish minimum standards for tap water

Question 11
Which of the following are a CAUSE of water pollution?

Choose the TWO correct answers

(1 point)
Responses

shortage of drinking water
shortage of drinking water

algal bloom
algal bloom

effluent from factories
effluent from factories

soil erosion
soil erosion
Question 12
The Clean Water Act funded the creation of which of the following?(1 point)
Responses

sewage treatment plants
sewage treatment plants

Superfund sites
Superfund sites

groundwater remediation plans
groundwater remediation plans

aquatic water preserves
aquatic water preserves
Question 13
Read the following and answer the question below the passage...

The Clean Water Act (CWA), enacted in 1972, is a key U.S. environmental law. Administered by the EPA, it regulates water quality by establishing standards, implementing the National Pollutant Discharge Elimination System (NPDES) for point sources, promoting Best Available Technology, controlling non-point source pollution, protecting wetlands, and enforcing penalties. The CWA aims to ensure clean water for various uses, prevent pollution, and preserve aquatic ecosystems.



What agency is primarily responsible for administering the Clean Water Act (CWA) in the United States?

(1 point)
Responses

Food and Drug Administration (FDA)
Food and Drug Administration (FDA)

Environmental Protection Agency (EPA)
Environmental Protection Agency (EPA)

Department of Energy (DOE)
Department of Energy (DOE)

Department of Agriculture
Department of Agriculture
Question 14
Read the following and answer the question below the passage...

The Clean Water Act (CWA), enacted in 1972, is a key U.S. environmental law. Administered by the EPA, it regulates water quality by establishing standards, implementing the National Pollutant Discharge Elimination System (NPDES) for point sources, promoting Best Available Technology, controlling non-point source pollution, protecting wetlands, and enforcing penalties. The CWA aims to ensure clean water for various uses, prevent pollution, and preserve aquatic ecosystems.



Which of the following is NOT a component of the Clean Water Act (CWA) aimed at regulating water quality?

(1 point)
Responses

Best Available Technology (BAT)
Best Available Technology (BAT)

National Pollutant Discharge Elimination System (NPDES)
National Pollutant Discharge Elimination System (NPDES)

Clean Air Standards (CAS)
Clean Air Standards (CAS)

Total Maximum Daily Loads (TMDLs)
Total Maximum Daily Loads (TMDLs)
Question 15
In the Flint water crisis investigation, the lead levels at Site A and Site B were initially modeled by the expressions:

Lead level at Site A = 2t + 5

Lead level at Site B = 3t + 2

After t months, the lead level at Site A became 15 ppb, while the lead level at Site B became 17 ppb. What is the value of t?

(1 point)
Responses

4 months
4 months

5 months
5 months

6 months
6 months

7 months

Answer 1

Here are the answers to the questions based on the information provided:

Question 1:
What is graywater?
Answer: household wastewater except for the wastewater from toilets.

Question 2:
Compared to conventional farming, which of the following are benefits of aquaponics systems?
Answer: total water usage, productivity per square foot.

Question 3:
Which of the following supports the idea that aquaponics helps reduce the impact of human activities on the environment?
Answer: Reuse of fish waste reduces the use of fertilizers.

Question 4:
Which of the following occurred because of Flint's water crisis?
Answer: General Motors stopped using Flint's water due to corrosion of their machinery; Dozens of people contracted a form of pneumonia known as Legionnaires' disease.

Question 5:
What caused the change in water quality in Flint, Michigan?
Answer: The city was taken off the Detroit water system to save money.

Question 6:
Which data help hydrologists predict floods?
Answer: impermeable land area, snowpack.

Question 7:
What clean water regulation establishes the basic structure for regulating discharges of pollutants into the waters of the United States and regulating quality standards for surface waters?
Answer: Clean Water Act.

Question 8:
Which of the following courses should a student take in order to become a hydrologist?
Answer: physical science, statistics.

Question 9:
Which of the following water filtration methods requires the use of a membrane or filter?
Answer: reverse osmosis.

Question 10:
Which best describes the Clean Water Act?

• regulates pollutants discharged into surface waters: True
• covers both surface and ground waters: False
• funds sewage treatment plants: True
• authorizes the EPA to establish minimum standards for tap water: False

Question 11:
Which of the following are a CAUSE of water pollution?
Answer: effluent from factories, algal bloom.

Question 12:
The Clean Water Act funded the creation of which of the following?
Answer: sewage treatment plants.

Question 13:
What agency is primarily responsible for administering the Clean Water Act (CWA) in the United States?
Answer: Environmental Protection Agency (EPA).

Question 14:
Which of the following is NOT a component of the Clean Water Act (CWA) aimed at regulating water quality?
Answer: Clean Air Standards (CAS).

Question 15:
In the Flint water crisis investigation, what is the value of t?

• Lead level at Site A = 2t + 5 became 15 ppb: 2t + 5 = 15 → 2t = 10 → t = 5
• Lead level at Site B = 3t + 2 became 17 ppb: 3t + 2 = 17 → 3t = 15 → t = 5
  Answer: 5 months.

Feel free to reach out for further clarifications or explanations!