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Understanding Water Resources Review: Hydrologic Cycle, Water Budget, Global Patterns, and Groundwater Management

Learn about the hydrologic cycle, water budget, soil moisture storage, and global water supply issues in this comprehensive review. Understand the importance of groundwater management and global water distribution patterns.

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Understanding Water Resources Review: Hydrologic Cycle, Water Budget, Global Patterns, and Groundwater Management

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  1. Chapter 9 Water Resources Robert W. Christopherson Tim Schultz

  2. Review: Hydrologic Cycle • Which of the following is incorrect regarding the hydrologic cycle? • More water evaporates over the oceans than over land. • Less precipitation falls over land than over the oceans. • Over land, precipitation is greater than evapotranspiration. • Over the ocean, precipitation is greater than evaporation.

  3. Review: Water Budget • A potted plant is placed on a scale and its loss in weight is measured over the course of a day. What is being measured? • actual evapotranspiration • potential evapotranspiration • photosynthesis • soil-moisture storage • oxygen demand

  4. Review: Soil Moisture Storage • Which of these soil types has the greatest capacity to store moisture that plants can use? • sand • loam • clay-loam • clay

  5. Review: Water Budget • Plants in areas that experience periods when potential evapotranspiration exceeds precipitation, such as Kingsport, Tennessee, • wilt when POTET is greater than PRECIP. • are specially adapted to endure desert conditions. • draw on soil moisture to make up for the deficit. • store gravitational water during times of surplus. • hibernate until the return of surplus.

  6. This map displays global patterns of precipitation. evapotranspiration. insolation. runoff. groundwater storage. Review: Water Resources

  7. Review: Groundwater • When groundwater has been “mined,” which of the following has definitely occurred? • Water has been pumped from the aquifer faster than it is being replenished. • The aquifer has collapsed and can never fill again. • The upper layers have been removed to access the water resource. • A dam has created a reservoir to trap excess groundwater. • Salt water has infiltrated from the ocean.

  8. Review: Global Water Supply • A major issue with global water supply is • population concentrations generally do not correspond with areas of high runoff. • some water supplies are shared between countries, generating conflict. • much of the excess precipitation runs off during floods, unused. • all of the above • none of the above

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