CHP 2 QUIZ 3

The total amount of water on Earth does not change, but it is constantly ______________

• evaporating
• disappearing
• accumulating
• moving

The excess water vapor changes into liquid water – a process called ______________

• evaporation
• condensation

• precipitation
• sublimation

About ______________ percent of the Earth’s water consists of one huge, continuous body of water that circles all the continents.

• 70
• 85
• 97

• 50

The Pacific Ocean is also deep enough in some places to cover ______________ , the world's highest mountain.

• Matterhorn
• Kilimanjaro
• Mount Everest
• K2

Seas ______________ and bays are bodies of saltwater smaller than oceans.

• rivers

• gulfs

• valleys

• Forests

Today some of these efforts focus on ways to remove the salt from ocean water or ground water in a process known as ______________ .

• desalination

• filtration

• purification
• distillation

Such high costs can make desalination an impossible option for many less ______________ countries, where limited funds are already spread too thin.

• poor

• impoverished
• developed

• struggling

Only about 3 percent of total water supply is ______________ , and most is not available for human consumption. 

• saltwater
• polluted
• frozen
• freshwater

An underground porous rock layer often saturated by very slow flows of water is called an ______________ . 

• spring
• reservoir
• aquifer

• geyser

The amount of water vapor the air holds depends on its ______________ .  Warm air holds more water vapor than cool air.

• altitude
• temperature
• pressure
• humidity