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
Water to Vapor(gas)
Evaporation
Solid to Gas, Ice to water vapor
Sublimation
Water vapor in the air into liquid water
Condensation (opposite of evaporation)
Flow of water below earth’s surface
Subsurface water flow
the flow of fresh water either from rain or melting ice, Occurs when there is more water than land can absorb. The excess liquid flows across the surface of the land and into nearby creeks, streams, or ponds.
Surface runoff
Melting of snow
Snowmelt
Rain or Snow
Precipitation
Where water vapor
changes directly into ice—such a snowflakes and frost.
Deposition
Major ways in which minerals, including carbon, nitrogen,
phosphorus, and sulfur, are cycled from land to water.
Rain and surface runoff
