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20 Cards in this Set

  • Front
  • Back
the study of the movements and characteristics of water on and under Earth's surfce
the mass of water stored beneath Earth's surface
place that stores water
Earth's main natural reservoirs
oceans, glaciers and polar ice, groundwater lakes and rivers, the atmosphere, the biosphere
Largest water repository on the planet
Oceans. 95.96% = salt water, 4.04% = fresh water
Resistance Time
With inflows and outflows of a reservoir, the resistance time is the average time that any quantity of water stays in the reservoir
World's total water supply
1.46 billion cubic kilometers
hydrologic cycle
cyclical movement of water
What powers some of the main flows of water from one reservoir to another
Water shifting from state to state (water, vapor, ice) depending on the temperature
rain or snow
the process by which water enters rock or soil through joints or small pore spaces between particles
the release of water vapor from plants
the rain water that flows over the surface
the transformation from a solid directly into a gas
Top three reservoirs, percent of water in each
Oceans 96%
Glaciers 3%
Groundwater 1%
Wisconsin Groundwater Facts
Wisconsin's ground water would cover the state to a depth of 105 feet.
Wells serve >70% of Wisconsin population.
Wells serve <30% of the US population.
Reservoir movements
influx = water in
discharge = water out
During dry periods
There is Low Runoff. Streams bring in small amounts of water and carry away small amounts
During wet periods
There is high runoff. Streams bring in large amounts of water, which is stored, and slowly released during dry periods.
Groundwater flow
is slow and diffuse. There are no underground rivers.