Aquatics

Question 1

What are the major 7 water quality factors?

Answer 1

• dissolved oxygen
• pH
• Nitrates
• Phosphates
• Carbon Dioxide
• Water hardness
• Flies

Question 2

What is the range for dissolved oxygen?

Answer 2

5.0-8.5 mg/L

Question 3

What is the pH range?

Answer 3

6.7-8.6

Question 4

What is the range for nitrates?

Answer 4

less than .3 ppm

Question 5

What is the range for phosphates?

Answer 5

less than .015ppm

Question 6

What is fecal coliform and where is it found?

Answer 6

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

Question 7

What is the range for CO2?

Answer 7

less than 20 ppm

Question 8

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

Answer 8

less than 100 ppm

Question 9

What are is the positive of nitrate?

Answer 9

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

Question 10

What are some dangers of nitatrates?

Answer 10

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

Question 11

What is eutrophication?

Answer 11

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

Question 12

How does heat effect the amount of oxygen?

Answer 12

The warmer the water the less oxygen

Question 13

What does high phosphate and nitrate levels lead to?

Answer 13

eutrophication

Question 14

What is turbidity?

Answer 14

the amount of particles/ minerals in water

Question 15

Which types of fish are indicators of high quality water?

Answer 15

trout, walleye, herring

Question 16

Which fish are indicators of low or poor quality water?

Answer 16

sunfish, bluegill, catfish , carp

Question 17

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

Answer 17

140gallons

Question 18

What are the 7 main human impacts on water quality?

Answer 18

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

Question 19

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

Answer 19

1 aeration
2 coagulation
3 sedimentation
4 filtration
5 disinfection

Question 20

What is a alum?

Answer 20

a sticky particles that clump together dirt and sink during sedimentation

Question 21

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

Answer 21

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

Question 22

What is safe to drink water called?

Answer 22

potable

Question 23

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

Answer 23

sludge

Question 24

What is the system for people without sewers?

Answer 24

septic tank system

Question 25

What are the steps in a basic wastewater treatment system?

Answer 25

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

Question 26

What is the largest watershed of the chesapeake bay?

Answer 26

Susquehanna

Question 27

Wha is pollution?

Answer 27

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

Question 28

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

Answer 28

point and nonpoint sources

Question 29

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

Answer 29

The Clean Water Act

Question 30

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

Answer 30

the fall line

Question 31

What six states make up the chesapeake bay watershed?

Answer 31

``` NY PA MA VA DE WV ```

Question 32

What is the amount of | miles surrounding the chesapeake bay watershed?

Answer 32

12,500

Question 33

What is a mix of fresh and salt water called?

Answer 33

an estuary

Question 34

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

Answer 34

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