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Environmental Science > Aquatics > Flashcards

Aquatics Flashcards

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1
Q

What are the major 7 water quality factors?

A
  • dissolved oxygen
  • pH
  • Nitrates
  • Phosphates
  • Carbon Dioxide
  • Water hardness
  • Flies
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2
Q

What is the range for dissolved oxygen?

A

5.0-8.5 mg/L

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3
Q

What is the pH range?

A

6.7-8.6

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4
Q

What is the range for nitrates?

A

less than .3 ppm

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5
Q

What is the range for phosphates?

A

less than .015ppm

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6
Q

What is fecal coliform and where is it found?

A

Fecal coliform is bacteria found in the digestive tracks of warm blooded animals and humans.

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7
Q

What is the range for CO2?

A

less than 20 ppm

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8
Q

What is the range for water hardness in a freshwater lake?

A

less than 100 ppm

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9
Q

What are is the positive of nitrate?

A

NO3 is a compound found in most food items and is essential to plant growth.

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10
Q

What are some dangers of nitatrates?

A

It is turned into nitrites in the intestine and prevent hemoglobin fro transporting oxygen. It also multiplies when boiled.

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11
Q

What is eutrophication?

A

Eutrophication is the overpopulation of plants and algae causing deoxygenated zones killing fish

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12
Q

How does heat effect the amount of oxygen?

A

The warmer the water the less oxygen

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13
Q

What does high phosphate and nitrate levels lead to?

A

eutrophication

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14
Q

What is turbidity?

A

the amount of particles/ minerals in water

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15
Q

Which types of fish are indicators of high quality water?

A

trout, walleye, herring

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16
Q

Which fish are indicators of low or poor quality water?

A

sunfish, bluegill, catfish , carp

17
Q

What is the domestic water use per person per day in the US?

A

140gallons

18
Q

What are the 7 main human impacts on water quality?

A 
1-sewage treatment plants/septic tanks
2-erosion and sedimentation
3-toxic waste dumping and runoff
4-oil spills
5-thermal pollution
6-herbicide and pesticide runoff
7- animal waste and fertilizer runoff
19
Q

What are the five steps in a basic drinking water filtration system?

A 
1 aeration
2 coagulation
3 sedimentation
4 filtration
5 disinfection
20
Q

What is a alum?

A

a sticky particles that clump together dirt and sink during sedimentation

21
Q

What are the 7 main characteristics used to classify aquatic environments?

A

tidal or not, saltiness, depth, the composition of the base, amount of plants, height of plants, water movement

22
Q

What is safe to drink water called?

A

potable

23
Q

What is the thick dirt part in wastewater treatment center called?

A

sludge

24
Q

What is the system for people without sewers?

A

septic tank system

25
Q

What are the steps in a basic wastewater treatment system?

A

bar screen, grit chamber, settling tank, aeration tank, settling tank, sludge digester/ drying bed, chlorine disinfection

26
Q

What is the largest watershed of the chesapeake bay?

A

Susquehanna

27
Q

Wha is pollution?

A

the presence of a substance in the environment that because of chemical composition or quality prevents the functioning of natural processes and causes undesirable environmental and health effects

28
Q

What do you call an identifiable source of pollution?Non identifiable?

A

point and nonpoint sources

29
Q

Which federal law established the basic structure for regulating the discharge of pollutants into waterways?

A

The Clean Water Act

30
Q

What is the line along Havre de Grace, Baltimore, and D.C. called?

A

the fall line

31
Q

What six states make up the chesapeake bay watershed?

A 
NY
PA
MA
VA
DE
WV
32
Q

What is the amount of

miles surrounding the chesapeake bay watershed?

A

12,500

33
Q

What is a mix of fresh and salt water called?

A

an estuary

34
Q

List the uses of water in the US from greatest to least.

A
  • Thermoelectric
  • Irrigation
  • Public Supply/water mains
  • Industry/production transportation of a product
  • Mining
  • Livestock
  • Domestic
  • Aquaculture

Environmental Science (9 decks)

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