8.E.1.4 Water Monitoring Review

Which is the MOST IMPORTANT reason for maintaining clean water?

• energy cannot be generated without water

• organisms cannot live and grow without water

• goods cannot be transported easily without water

• people cannot maintain proper hygiene without water

Justin is a farmer who want to improve the quality of the local streams on his farm. Which action will have the MOST impact?

• growing cotton instead of corn

• using a tractor with smaller wheels

• increasing the amount of fertilizer used on the crops

• planting a vegetated buffer strip along the perimeter of the field

In which way could humans BEST prevent a nonpoint source of water pollution in NC?

• reduce the application of fertilizers in fields

• regulate waste discharge from an industrial factory

• monitor the average high temperatures in the area

• maintain ships to prevent the likelihood of oil spills

Which BEST explains the difference between primary and secondary sewage treatment?

• primary treatment removes phosphates and nitrates

• secondary treatment removes all of the pollutants

• primary treatment removes the solid materials

• secondary treatment is less expensive

How could government laws have the MOST direct impact on water quality?

• provide rewards to recycle

• provide rewards to use solar power

• provide rewards to use liquid absorbing surfaces

Which is the MOST IMPORTANT reason why findings of water quality studies need to be communicated to policy makers?

• so laws can be enacted to protect the hydrosphere

• so policy makers will begin to conserve water personally

• so laws protecting the environment can have fewer penalties

Which MOST LIKELY would cause diseases to be spread by polluted water?

• dumping human waste in rivers and streams

• runoff that contains fertilizers and pesticides

• an oil spill resulting from an accident to a ship carrying oil as cargo

Which is an effect of chlorine in water?

• kills the microorganisms

• improves the taste

• aerates the water

Which BEST explains why water may be treated differently in different communities?

• some communities avoid using groundwater

• groundwater requires more expensive treatments

• environmental factors vary between communities

Which is used by sewage treatment plants to kill harmful bacteria in water?

• filters

• chlorine

• detergents

• coagulants