Exam 9: Water Resources

The downslope, unchannelized flow of water across the surface is known as

An estimated ________ percent of the Earth's precipitation occurs over oceans.

Water quantity and quality are pressing issues for water resource managers.

Soil moisture tightly bound to each soil particle and unavailable for plant use is termed ________ water.

Field capacity and wilting point are both influenced by soil texture.

Soil permeability depends on soil particle size, shape, and packing of soil grains.

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

Which of the following is true regarding groundwater?

Which condition may exist when the pontentiometric surface is above ground level

The difference between a confined and unconfined aquifer is determined by whether there is solid, impermeable surface beneath the aquifer.

The largest reservoir in the world by volume is

Define the following: soil-moisture storage, hygroscopic water, wilting point, capillary water, field capacity, gravitational water, soil-moisture recharge, soil porosity, and soil permeability.

About 50 percent of the 125,000 (30,000 ) of freshwater in lakes is

A drought defined by the degree of dryness as compared to a regional average and the duration of dryness is a(n)

Which of the following is normally true of a hot desert?

Which of the following is true when the soil is at field capacity?

What are the two basic pathways precipitation can take once it reaches Earth's surface?

Approximately ________ countries are currently experiencing water shortages.

Glacio-eustatic factors refer to

Of all the surface freshwater on Earth, over 99% is in ice and glaciers.