Estuaries and Oceans Quiz

Which best explains how nutrients, salt, sediment and pollutants get into estuaries and oceans?

• From precipitation falling over the estuaries and oceans

• From organisms living and dying in estuaries and oceans

• From rivers and streams flowing into estuaries and oceans

• From asteroids and comets impacting Earth at estuaries and oceans

Which accurately describes the relationship between nutrients and life-forms in an estuary?

• As nutrients increase, the number of life-forms increases.

• As nutrients decrease, the number of life-forms increases.

• As nutrients increase, the number of life-forms stays the same.

• As nutrients decrease, the number of life-forms stays the same.

In which oceanic zone do clams and crabs survive by burrowing in the sand?

• oceanic

• intertidal

• deep ocean

• open ocean

Which contributes most in supporting life on the deep ocean floor?

• cold water temperatures

• extreme water pressure

• hydrothermal vents

• lack of predators

Which technology is most efficient in mapping large areas of the ocean floor?

• sonar

• robots

• depth gauge

• satellite imaging

In which location would fishermen most likely catch a greater number of fish?

• at the shoreline

• in an upwelling

• in the intertidal zone

• on the deep-ocean floor

Which best describes the shallow water ocean zone?

• The long water column protects small organisms from being eaten by large predators.

• Cooler water temperatures cause a decrease in dissolved oxygen needed by organisms.

• Sunlight penetration increases algae growth and provides food for a variety of organisms.

• Hydrothermal vents provide heat and dissolved minerals needed by some organisms to survive.

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.

• Upwelling keeps large predator fish away from the surface.

In which ocean zone is ocean temperature most affected by the weather?

• deep zone

• polar zone

• surface zone

• transition zone

Which are the most abundant dissolved gases in ocean water?

• nitrogen and carbon dioxide

• oxygen and carbon dioxide

• oxygen and methane

• nitrogen and sulfide