Ocean Floor Quiz

Why haven't we talked a lot about the ocean floor?

• There is no significant geological activity on the ocean floor

• It is difficult to obtain information from the bottom of the ocean

• The ocean floor is not important for scientific research

• There are no interesting features on the ocean floor

What is the deepest part of the North Atlantic?

• Off the coast of Florida and Cuba

• Near the Mariana Trench

• In the middle of the Atlantic Ocean

• Along the continental shelf

What are the three major provinces on the sea floor?

• Continental margins, deep ocean basins, and oceanic mid-ocean ridge

• Subduction zones, strike-slip faults, and mantle plumes

• Continental shelves, abyssal plains, and seamounts

• Trenches, volcanic islands, and accretionary wedges

What is the boundary between the oceanic crust and the continental crust called?

• Abyssal plain

• Continental slope

• Continental rise

• Shelf break

What are accretionary wedges?

• Thick accumulations of sediment on abyssal plains

• Sites where moving lithospheric plates plunge into the mantle

• Isolated volcanic peaks on the ocean floor

• Accumulations of deformed sediments and scrapes of oceanic crust

Where are the deepest parts of the ocean usually found?

• On the continental shelves

• In the trenches

• Along the mid-ocean ridges

• On the abyssal plains

What are submarine canyons?

• Features found on passive continental margins

• Accumulations of deformed sediments on the ocean floor

• Narrow features that distribute sediments into the deep ocean

• Isolated volcanic peaks near oceanic ridges

What are abyssal plains?

• Isolated volcanic peaks on the ocean floor

• Sites where lithospheric plates plunge into the mantle

• Deep and flat areas on the ocean floor with thick sediment accumulations

• Accumulations of deformed sediments and scrapes of oceanic crust

Where are seamounts commonly found?

• Near oceanic ridges

• On the continental shelves

• In the trenches

• On the abyssal plains

What is the Mariana Trench known for?

• Having the largest deep sea fans

• Being a passive continental margin

• Being the deepest part of the ocean

• Having extensive glacial deposits