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Intro to WS Dynamics

Chapter 1, Watershed Dynamics

The boundaries of river basins and watersheds are defined how? By the way water flows over the land.
In the following list, choose the ONE item that is NOT a global water reservoir. 1. atmosphere 2. carbon cycle 3. desalination plants 4. streams and rivers 5. oceans desalination plants
the total amount of water on earth has/has not changed since the Earth formed 4 billion years ago. has not changed
The movement of water between the various global water reservoirs is commonly called the hydrologic or water cycle
How can the atmosphere be considered part of the hydrosphere? because it is a source of water
Seasonal tourism causes a shortage of freshwater supply along the coast. The affected communities decide to purchase water from other sources instead of refusing to take in more tourists. This is an example of what? an economic trade - off
When water condenses it is changing form from a _________ to a __________. gas to a liquid
Clouds forming in the sky and dew forming on petals of a flower in early morning are examples of what part of the water cycle? condensation
Between aquifers, lakes, rivers, icecaps and estuaries, which one DOES NOT directly contribute to water vapor in the atmosphere? aquifers
Places where groundwater is found are called? aquifers
Where is most of the freshwater found on earth? ice caps and glaciers
Readily available fresh water for our use is found where? in rivers, lakes and streams
Where does most of NC's drinking water supplies come from? groundwater, lakes and rivers
How does groundwater help to keep surface waters full? groundwater is stored in aquifers where it slowly moves into riverbeds.
In areas where flooding is prevalent water is considered to be too abundant
In areas where conservation of available resources is important, water is considered to be in short supply
In areas where protection of water resources is critical, water is considered to be in short supply
In areas where water contains improperly disposed chemicals water is considered to be contaminated
In areas where farmers are arguing with recreational users or developer and environmentalists clash, water is considered to be contaminated
When it is important to identify new sources of water, water is considered to be in short supply
List 3 ways dynamic water bodies can change biologically, physically, chemically
What is the bottom line on dealing with water resource issues? ensure both humans and the natural world have enough, but not too much clean fresh water.
Define watershed watershed is the region of land draining into a stream, river, pond, lake, or other body of water.
Define watershed divide the boundary along a watershed
Watershed characteristics depend on 3 characteristics. What are they? Climate, geography, vegetation
Define wetlands and give an example Heavily vegetated areas that are saturated with water at least part of the year: examples: swamps, marshes, bogs
Important functions wetlands play in the environment: 1. Reduce flooding 2. Maintain flow in rivers and streams during drought. 3. Purify water 4. Provide wide variety of habitats
Created by: 8teach8