Water Unit Review

What is an aquifer?

• A type of water treatment process

• An underground layer of water-bearing material

• A method of water desalination

• A type of water pollution

What does desalination refer to?

• Removal of pollutants from water

• Accumulation of salts in soil

• Removal of dissolved mineral salts from water

• Filtration of water

Which term describes water that exists underground in saturated zones beneath the land surface?

• Surface water

• Sewage

• Groundwater

• Runoff

What is meant by nonpoint-source pollution?

• Pollution from a specific location like a pipe

• Pollution that occurs when pollutants are carried into waterways by runoff

• Pollution treated by community sewage systems

• Pollution in reservoirs

What is the primary function of a reservoir?

• To treat wastewater

• To accumulate salts in the soil

• To act as an enlarged lake behind a dam

• To facilitate groundwater infiltration

What process involves the accumulation of water-soluble salts in the soil?

• Desalination

• Salinization

• Sewage treatment

• Infiltration

Define watershed.

• A method of filtering water

• An area that drains into a common outlet like a reservoir or bay

• A type of underground water storage

• A process of removing pollutants from water

What is the purpose of water treatment?

• To prevent runoff

• To store water in aquifers

• To remove impurities and make water suitable for use

• To increase water salinity

The primary difference between groundwater and surface water is ​ (a)  

• surface water is only found in lakes
• surface water is salty
• ground water is only used for drinking
• ground water is below ground

Which of the following is a consequence of groundwater depletion?

• Increased volcanic activity

• Sinking cities and salt water intrusion

• Enhanced soil fertility

• Reduced air pollution