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