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Intro to WS Dynamics
Chapter 1, Watershed Dynamics
Question | Answer |
---|---|
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 |