world ocean chap 3

old lithosphere is destroyed in association with

deep sea trenches

passive continental margins are characterized by all of the following

deep sea trenches

deepest portions of the ocean are the part of the relatively narrow features called submarine canyons

false

mid ocean ridges are rises that occupy a small portion of the deep ocean basin, only 10%

false

the direction of motion along a seafloor transform fault is

in the same direction as each of the plates moving

what does not fit the pattern? black smoker, large deep focus earthquakes, hydrothermal vent, rift valley, white smoker

large, deep focus earthquakes

new lithosphere is produced at which feature

mid ocean ridges

most rapid change in slope in the ocean is found at the

oceanic trench

what does not fit? abyssal hill, guyot, ridge crest, sea knoll, tablemount

ridge crest

the correct order of marine provinces from the coast to the mid ocean ridge

shelf, slope, rise, abyssal plain

abysssal hills are only visible in the pacific ocean because

they are higher in the pacific than in the other ocean basins

satellites are used to map the ocean floor because

they are unaffected by surface weather, they can cover areas where ships have not produced surveys, they can see large areas of the seafloor at one time, the shape of the ocean surface itself reflects large features on the seafloor below

broadest continental shelves occur in the arctic ocean

true

oceans with passive margins have continental slopes with more gradual slopes than oceans with active margins

true

sediment laden current that flows off of the continental shelf is called a turbidity current

true

underwater avalances of muddy water mixed with rocks and debris

turbidity currents

hydrothermal vents are extensive formations of precipitated barium sulfide are called

white smokers

characteristics of active continental margins include all of the following except

broad continental shelf

continental rises are formed

by many deep sea fans

all of the following are features associated with active ocean margins except

continental rise