Water Respurce Flashcards
is the movement of water around the Earth’s surface and its subsystems. The cycle consists of interconnected pathways and reservoirs.
The hydrologic cycle, also known as water cycle,
Liquid changes into vapor
Evaporation
Evaporation of water from the leaves and stems of plants which contributes to about 10% of the water vapor in the atmosphere
Transpiration
In high altitudes, ice can directly transform into water vapor in a process called
Sublimation
Rain that falls into the land surface penetrates the soil in a process called
Infiltration
When the soil become saturated, rainwater may flow over land as
Surface runoff
_% Ocean
97.5
_% freshwater
2.5%
_% from glaciers
68.7%
_% from groundwater
30.1%
_% from permafrost, surface water, and atmospheric water
0.8%
The surface water in rivers, lakes, swamps, soil moisture, living things, atmospheric water vapor, ground ice, and permafrost, constitute only about _% of the total freshwater supply or less than _% or the total water on Earth.
0.4% and 0.02%
An ocean is a vast body of
Saline water
_% of earth is covered by saline water
71%
The total volume of water in the worlds ocean is about
1340 Million km3
The saltiness of saltwater is called
Salinity
is the layer of a turbulent fluid most affected by interaction with a solid surface or the surface separating a gas and a liquid where the characteristics of the turbulence depend on distance
from the interface.
Surface layer
Large-scale density-driven circulation in the ocean, caused by differences in temperature and salinity. In the north Atlantic, the _ circulation consists of warm surface water flowing northward and cold deepwater flowing southward, resulting in a net pole ward transport of heat.
Thermohaline
Most of the freshwater on Earth is stored in glaciers situated in inaccessible areas such as the _ and _. The readily available freshwater sources are the surface water reservoirs and groundwater reservoir.
Polar Regions and High Mountains