multiple choice and short answers
Question 1
Dissolved load |
Bed load |
Sorting |
Capacity |
Braided channels
A.
The maximum load of solid particles a stream can transport | |
| B. | Sand, gravel, and large boulders that are too large to be carried in suspension, and instead move along the bottom of a stream channel |
| C. | Soluble sediments that are carried in solution |
| D. | A complex network of converging and diverging channels that thread their way among numerous islands or gravel bars |
| E. | The physical breakdown (disintegration) and chemical alteration (decomposition) of rock at or near Earth's surface |
| F. | The process by which solid particles of various sizes are separated and deposited in different location |
Spring |
Geyser |
Artesian well |
Aquifer |
Aquitard
A.
Impermeable layers that prevent water movement | |
| B. | Permeable rock strata that permits water to flow |
| C. | Localized zone of saturation above an impermeable layer |
| D. | Where the water table intersects the Earth's surface |
| E. | Fountains of hot ground water ejected with great force |
| F. | Ground water confined to a layer, in which the recharges area is higher than the outlet |
Many developing countries with large river systems are rushing to build dams for hydroelectric power to stimulate economic development. For example, China completed the Three Gorges Dam, one of the world’s largest, on the Yangtze River in 2006 and more recently Ethiopia has announced plans to build the Grand Millennium Dam on the Nile River. There’s no question that dams are of economic benefit but on the flip side, they may also have unintended and undesirable costs. If you were in charge of planning the construction of a large dam, what are some of the environmental and cultural costs (other than monetary - please don't discuss economic costs of dams as your primary content) that you would consider undesirable and what would you do to minimize these costs?
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