The Water (Hydrologic Cycle) Flashcards
Basis of all living processes.
Water
The human body is more than 1/2 water and human cells are more than ___ percent water.
70
Non- potable salt water percentage
97.5
Water percentage that is locked underground water or as ice
99
True or False: Many living things, such as plants, animals, and fungi, are independent on the small amount of fresh surface water supply, a lack of which can have massive effects on ecosystem
dynamics.
False, dependent
Freshwater percentage and km area
2.5%, 35,000,000 km3
Saltwater percentage and km are
97.5%, 1,365,000,000 km3
Glaciers and Paramount covers
68.9% (kung feeling mo wala to sa exam mali k)
Groundwater (soil moisture, swamp water, permafrost)
30.8
True or False: less than 1 percent of freshwater is easily accessible to living things.
True
It is extremely important to ecosystem dynamics.
Water cycling
It has a major influence on
climate and, thus, on the environments of ecosystems, some located on distant parts of the Earth.
True
It is a measure of the average time an individual water molecule stays in a particular reservoir.
Residence Time
True or False: A large amount of the Earth’s water is locked in place in these reservoirs as ice, beneath the ground, and in the ocean, and, thus, is available for long-term cycling (only surface water can evaporate).
False, unavailable for short term
Average Residence Time for Water Molecules:
BARS SLOG G (bars silog g
Biospheric (in living organisms)- 1 week
Atmospheric- 1.5 weeks
Rivers- 2 weeks
Soil Moisture- 2 weeks - 1 yr
Swamps- 1 yr to 10 yrs
Lakes and Reservoirs- 10 yrs
Oceans and seas- 4k yrs
Groundwater- 2 weeks to 10k yrs
Glaciers and permafrost- 1k- 10k yrs
