10/20

Where does most fresh water exist? 

• ice caps, lakes, and streams 
• glaciers, rivers, and oceans 
• aquifers, ice caps, and glaciers

Why do large numbers of ocean life-forms live near areas of upwelling?

• Upwelling brings nutrients to the surface.
• Upwelling brings warm water to the surface
• Upwelling helps push small fish up toward the surface
• D. Upwelling keeps large predator fish away from the surface

Which chemical elements in fertilizers pollute stormwater runoff and contribute to excessive plant growth in a water system?

• iron and lead
  
• copper and zinc 
• calcium and magnesium 
• phosphorous and nitrogen

Which is Earth’s largest source of drinkable water?

• lakes 
• rivers 
• oceans 
• aquifers 

Which would most likely cause a sudden increase of nitrates in a waterway?

• spill from an oil tanker
• runoff from a boat yard
• runoff from a golf course
• discharge from a chemical plant

The empty spaces in a material are called pores. Porosity is the amount of empty space within a material. Permeability describes how well the pores in a material are connected. Which of these materials would make the MOST effective aquifer?

• a material that has high porosity and high permeability

• a material that has high porosity and low permeability

• a material that has low porosity and high permeability

• a material that has low porosity and low permeability

Which characteristic of water quality provides the most information regarding the

health of a water system?

• clarity

• temperature

• concentration of heavy metals

• presence of indicator species

Which factors can have the greatest effect on the health of a river system?

• type of soil and salinity

• nitrate levels and turbidity

• human consumption and pH

• natural disasters and tidal changes

Which is able to give the most detailed information about the topography of a large area on the ocean floor?

• sonar

• submersibles

• satellite imagery

• teams of scuba divers

In which part of the ocean do the greatest number of organisms live?

• in the deep zone to escape predators

• near the shore to burrow in the sand

• close to the surface to be near the largest food source

• in the open ocean to regulate their bodies in cooler temperatures