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