Ocean Zone Trivia Questions

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

• oceanic

• intertidal

• deep ocean

• open ocean

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.

Which is the main source of dissolved oxygen in the ocean?

• underwater earthquakes

• decay of living organisms

• animals that live near the surface

• plants and algae that live near the surface

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

• midnight zone

• polar zone

• sunlit zone

• twilight zone

How is the amount of oxygen in ocean water affected by temperature?

• The amount of oxygen in ocean water increases as temperature increases.

• The amount of oxygen in ocean water increases as temperature decreases.

• The amount of oxygen in ocean water decreases as temperature decreases.

• The amount of oxygen in ocean water is kept constant as temperature decreases.

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

To which condition do all species in the ocean depths have to adapt?

• hot water temperature

• lower salinity

• swift ocean currents

• extreme pressure

Which best explains why there is a greater concentration of oxygen located near the ocean's surface?

• Sunlight warms the ocean’s temperature and stimulates oxygen production near the surface.

• Plankton produces excess amounts of nutrients that remove oxygen levels from the atmosphere.

• Marine life gives off oxygen instead of carbon dioxide, which makes the ocean water rich in oxygen.

• Plants, which release oxygen, live near the surface of the ocean, where they receive large amounts of sunlight.

How is sonar used to map the surface of the ocean floor?

• Light waves are used to take pictures of the ocean floor.

• Various temperatures are measured to determine the depth of the ocean floor.

• Scuba divers take videos and photographs to document their trips to the ocean floor.

• Sound waves are emitted and bounced off the ocean floor to determine the distance from the receiver.