Chapter 3

Extending from teh base of the continental rises into deep ocean basins are flat depositional surfaces called

Abyssal plain

Due to the very harsh environmental conditions, very few types are found in association with hydrothermal vents

False

Ocean trenches are deep linear scars in the ocean floor caused by the divergence of plates along divergent

False

Seamounts form from ancient table mounts

False

The continental shelf is generally defined as steeply sloping zone extending from the shoreline to the shelf break

False

The three major provinces of the ocean floor are continental margins, deep ocean basins, and submarine canyons

False

Turbidity currents are highly erosive and are thought to be responsible for the creation of deep sea trenches

Fasle

Volcanic peaks on the deep ocean floor with conical tops are called

Sea mounts

The method that is used most frequently to investigate sediment and rock layers of the sea floor is

Sound waves (specifically siesmic reflecting profiling)

Sediments of the Continental rise can exhibit characteristics similar to those formed by rivers on land

True

Continental shelf

a generally flat zone extending from the shore to teh shelf break

M<ulti beam soanr

a method of mapping the topography of the ocean floor along a strip up to 60 km

ocean trench

deep linear scars on the deep ocean floor caused by plate convergence

Abyssal Plain

flat depositional surfaces that cover extensive portions of the deep ocean basins

the direction of motion along a sea floor transform fault is

in the same direction as the plates are spreading

Transform faults have all the following characteristics except

movement occurs in the same direction

Segments of the oceanic ridge system that are gentler and less rugged in slope due to faster rates of seafloor transform fault is

oceanic ridges

Underwater avalanches of muddy water mixed with rocks and debris are

turbidity currents

Precision depth recorder

uses high frequency sound waves to measure ocean depth

Oceanic ridges abd rises result from seafloor spreading along:

Divergent plate boundaries

Black smokers are vents that discharge superheated water with high concentrations of metal sulfides

True

Oceanic ridges are cut by a number of transform faults, which offset spreading zones

True

Satellite measurements of the ocean surface can be used to make the maps of the sea floor

True

Te two relatively flat areas on the hypsographic curve represent

some interior continental areas/ coastal plain and abyssal plains on the ocean floor