Water

Question 1

Water is about ____ of Earth

Answer 1

70%

Question 2

what are the main types of water resources? and how many percent of each is present on the earth?

Answer 2

97% saline, 3% fresh

Question 3

freshwater percentages

Answer 3

2/3 glaciers, 1/3 ground and surface water (about 1% of that 1/3 is surface water)

Question 4

where does surface freshwater mostly come from

Answer 4

lakes - swamps - rivers

Question 5

the movement of water molecules from a solution with a high concentration of water molecules to a solution with a lower concentration of water molecules, through a cell’s partially permeable membrane.
- this is why we can’t drink salt water bc it might cause dehydration as it has low water concentration, while our cells have high water concentration

Answer 5

osmosis

Question 6

global water usage

Answer 6

agriculture - 70%
industry - 23%
domestic - 7%

Question 7

green water

Answer 7

soil moisture

Question 8

blue water

Answer 8

surface and ground freshwater

Question 9

greywater

Answer 9

chemically polluted water
- product water of domestic activities: bathing, laundry, and dishwashing
- polluted water due to pesticides in agriculture and nutrients from fertilizers- contains soap, fat particles, and even hair

Question 10

can greywater be recycled and reused

Answer 10

yes, not for drinking, but for irrigation. Since it was not in contact with human waste, it can be used for watering crops and other plants and is safely reabsorbed into the ground if the chemical content is not too high. however, it is highly advised that what goes down the drain is heavily regulated

Question 11

the artificial application of water to the soil through various systems of tubes, pumps, and sprays. usually used in areas where rainfall is irregular or dry times or drought is expected.

Answer 11

irrigation

Question 11

effects of greywater

Answer 11

(in order)

• leaching - water dissolve chemicals (greywater)
• eutrophication - water environment change due to high amounts of nutrients/chemicals
• algal bloom - algae will start to grow on the surface due to the nutrients present in the water
• oxygen deprivation - algae will block sunlight and oxygen to get in the water; bacteria will grow
• fish kill - aquatic organisms will start to die

Question 12

agricultural use of water

Answer 12

(Crop cultivation, Livestock, Poultry, Aquaculture, Forestry, Biofuel)
- Irrigation
- Pesticide and fertilizers
- for animals
- Cleansing
- Energy production
- Cooling
- Transportation

Question 13

what water does agriculture use and produce

Answer 13

it uses green water and blue water and produces greywater

Question 14

industrial use of water

Answer 14

(factories, mining, commercial, and recreational establishments)
- Chemical processes and production
- Energy production
- Cooling (water - one of the most effective cooling agent)
- Cleansing
- Recreational uses

Question 15

what water does the industry use and produce

Answer 15

uses blue water and produces greywater

Question 16

domestic use of water

Answer 16

household and personal use

Question 17

how many gallons of water does a person consume in 24 hours

Answer 17

120 gallons

Question 18

what water does the domestic sector use and produce

Answer 18

uses blue water and produces greywater and black water

Question 19

black water

Answer 19

contaminated with fecal water

Question 20

“We will not runout of water on earth because water is infinite due to water cycle” is this true?

Answer 20

no, our water consumption is faster than the time it takes for potable water to be produced by the water cycle. Not all water returns as usable, since pollution and some turn into black and greywater.