Exam 6: Water on Earth

The overall quantity of water on Earth is constantly fluctuating as evidenced by changes in sea level.

By current estimates,groundwater provides approximately 25% of the worldʹs irrigation water.

Intercepted water that drains across plant leaves and down their stems to the ground is known as

Dams and other water projects result in the redistribution of water over both space and time.

The movement of water into the atmosphere from plants is

Human made lakes are generally called reservoirs.

The term ʺcone of depressionʺ refers to

Glacio-eustatic factors refer to

Water and water vapor entered Earthʹs early atmosphere through outgassing and eventually led to the formation of Earthʹs ponds,lakes,seas,and,eventually,oceans.

Describe the hydrological cycle,including its different components.

Approximately what percent of the worldʹs irrigation water is from groundwater?

An estimated_______ percent of Earthʹs precipitation occurs over oceans.

Water is the third most common compound on the surface of Earth,after carbon dioxide and methane.

A water budget is derived from measuring system inputs of precipitation and system outputs of evapotranspiration and runoff.

The line of contact between the zone of aeration and the zone of saturation is known as the

Soil moisture that plants are capable of accessing and using is called

The term ʺground water miningʺ refers to

The water-balance methodology is,in essence,an accounting or bookkeeping system for water resource analysis.

Center pivot agriculture which pumps water from an aquifer is an example of instream water use.

The environmental effects of damming rivers for hydropower are minimal.