8.E.1.2 Oceans EOG Review

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.

Which will most likely result if there is increased upwelling in a coastal area?

• more aquatic life

• less nutrients in the water

• higher water temperatures

• fewer nitrates

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

Why are many fishing boats found near ocean upwellings?

• There is less vegetation there.

• The water is less turbulent there.

• Many marine species gather there to eat the nutrients brought to the surface.

• Upwellings are found in more shallow waters, so boats do not need deep anchorage.

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

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.