Env Ch 11-Water

Which of the following is a true statement about surface water?

• All large cities use surface water as a water source.
• Drought conditions reduce the amount of surface water worldwide.
• Sluggish waters make natural lakes poor water sources.
• It makes up less than 1 percent of all water on Earth.

Most of Earth’s fresh water is

• suspended in atmospheric cloud formations.
• held in reservoirs behind large dams.
• solidified at the North and South Poles.
• stored in large underground rock structures.

Earth’s surface water is found in

• lakes.
• rivers.
• streams.
• All of the above

What is the relationship between groundwater and surface water?

• Surface water percolates through the soil to form groundwater.
• There is no relationship between surface and groundwater; they form independently.
• Groundwater filters through the soil to form surface water.
• Surface water is found in lakes directly above underground water sources.

What is the purpose of adding chlorine to water during the water treatment process?

• to filter and remove large debris
• to form flocs that bacteria and other impurities will cling to
• to kill bacteria that have accumulated, as well as prevent future bacterial growth
• to remove unwanted gases

How is fresh water used in industry?

• in manufacturing processes
• in the disposal of waste products
• to generate power
• All of the above

Many areas of the world without adequate fresh water have become habitable because

• rainfall patterns have changed
• water management projects have diverted water to the area.
• icebergs have been towed in to provide fresh water.
• water conservation has been implemented.

Which of the following is one way a person could conserve water?

• take a long bath instead of a shower
• wash laundry in small, partial loads
• use a low-flow showerhead and take short showers
• water your lawn daily and at mid-day

Which of the following represents nonpoint-source pollution?

• unlined landfill
• polluted wastewater from a chemical plant
• leaking oil tanker
• runoff from agricultural feedlots

Parasitic worms would be classified as which type of water pollutant?

• pathogen
• organic matter
• inorganic chemicals
• heavy metals