Unit 6 Water Quality

Question 1

What are the properties of water?

Answer 1

• high heat capacity
• moderates climate
• expands and reduces in density when frozen
• universal solvent

Question 2

How much water on the earth is fresh?

Answer 2

3 and mostly frozen

Question 3

What is transpiration?

Answer 3

Water vapour released by plants

Question 4

What is sediment pollution?

Answer 4

Soil particles erode and accumulate at the bottom of water bodies

Question 5

What are some problems with algae burst?

Answer 5

• Turbidity-reducing light penetration
• siltation that destroys fish habitat (spawning)
• adhered pollutants (fertilizer)

Question 6

What is it called when phosphorus or nitrogen is released into the water systems?

Answer 6

Eutraficarion

Question 7

What is cultural eutrophication?

Answer 7

When humans speed up a natural process

Question 8

How do humans reduce oxygen in water systems?

Answer 8

By stimulating decomposes

Question 9

What is BOD?

Answer 9

Biochemical oxygen demand

Question 10

What’s the relationship between DO AND BOD

Answer 10

Inverse

Question 11

When did lake Winnipeg start being polluted badly?

Answer 11

1990’s

Question 12

How much blue green algae is in lake Winnipeg compared to other algae?

Answer 12

90%

Question 13

What are some sources of phosphorus to lake Winnipeg?

Answer 13

• detergent
• sewage
• pig farming
• fetilizer

Question 14

How much phosphorus is in lake Winnipeg?

Answer 14

540 tones

Question 15

What are the 3 types of diseases causing micro-organisms?

Answer 15

Bacteria
Viruses
Protozoa

Question 16

Where do fecal coliforms come from?

Answer 16

Sewage and manure

Question 17

What is cynobacteria and why is it special

Answer 17

Blue green algae and it is special because it can take nitrogen from the atmosphere where all other bacterias need there nitrogen from the water

Question 18

What is the ratio of p to n for a healthy water system?

Answer 18

16N

1P

Question 19

What are the 3 steps of greeting water

Answer 19

1 primary- remove sediments
2 secondary - manage BOD by increasing bacteria to remove all biochemical substance
3 tertiary - remove bacteria with UV or chlorine

Question 20

What is an unsaturated zone?

Saturated zone?

Answer 20

Unsaturated is room for water

Saturated is no room for water

Question 21

What is the water table?

Answer 21

The point where the ground can’t hold any more water

Question 22

What is an influent stream?

Answer 22

It is a water body where the water table is below the bottom of the water body so it can drain into the ground

Question 23

What is an effluent stream?

Answer 23

It is a body of water where the water body is above the water body so the ground underneath is saturated

Question 24

What percentage of freshwater is used for irrigation

Answer 24

71

Question 25

What is salinization?

Answer 25

When minerals build up in soil and impare crops

Question 26

What is the ogallala aquifer?

Answer 26

One of the largest aquafer in the world and it drops 2 feet a year

Question 27

How much of the world fresh water is in Canada?

Answer 27

7%

Question 28

What are the 3 R’s of water consumption?

Answer 28

Reduce consumption
Repair leaky pipes
Retrofit with 2 technology