7, 19. The HMS
Challenger was the first major
oceanographic expedition. It
occurred in what time period?
a 1801-1826
.
b 1827-1850
.
c 1851-1876
.
d 1877-1900
The Hawaiian Island chain,
including the Emperor
Seamounts, have been
formed through the action of
?
a plate tectonics
.
b a hot spot
.
c volcanism
.
d all of these
Old lithosphere is destroyed in
association with:
a spreading centers.
.
b mid-ocean ridges
.
c fracture zones
.
d deep-sea trenches
.
On abyssal plains (deepocean basins), red clays
accumulate at about
mm/1,000 years or
m/1,000,000 years?
a tenths
.
b 1's
.
c 10's
.
d 100's
By far the majority of landderived sediments originate
from
.
a erosion by wind and rain
.
b rivers
.
c glaciers
.
d volcanoes
The longshore movement of
sand is most directly driven
by
.
a river runoff
.
b offshore winds
.
c the beach slope
.
d the longshore current