WorksheetsOceanography Review
Total questions: 15
Worksheet time: 11mins
Which submersible has been used for deep-sea research?
SS Trinity
Challenger
Alvin
SS Woods Hole
What is the speed of sound in water?
100 meters per second
500 meters per second
1,000 meters per second
1,500 meters per second
Which of the following currents is associated with downslope movements of dense sediment-rich water?
avalanche current
density current
turbidity current
longshore current
What are seamounts?
volcanoes that form on the ocean floor
only found in the Pacific Ocean
a special type of oceanic trench
submarine canyons found near Australia
Which of the following occurs at the continental margin in the Pacific Ocean?
volcanic activity
earthquakes
plate interactions
all of the above
Mineral-rich water, heated by newly formed oceanic crust, escapes through cracks in the ocean floor called _____.
nodules
rifts
hydrothermal vents
trenches
Which of the following is NOT a biogenous sediment?
manganese nodules
calcareous ooze
siliceous ooze
phosphate-rich material
Which of the following is NOT a hydrogenous sediment?
manganese nodules
calcium carbonates
evaporites
calcareous ooze
Most gas hydrates form when which of the following occurs?
Bacteria break down organic matter trapped in ocean-floor sediments.
Pressure from overlying rock transforms organic matter into liquid form.
Minerals crystallize from ocean water.
none of the above
Which ocean resource is currently NOT economically profitable to mine?
salts
manganese nodules
sand
gravel
One thousand grams of seawater would consist of how many grams of dissolved substances?
35
65
635
965
Which layer of the ocean experiences a rapid change in density with depth?
deep zone
thermocline
pycnocline
mixed zone
In addition to salinity, what factor affects the density of seawater?
depth
latitude
temperature
salt content
How do plankton differ from nekton?
Plankton are strong swimmers.
Plankton are floaters.
Plankton are carnivores.
Plankton live on the ocean bottom.
Because of the Coriolis effect, ocean currents in the Northern Hemisphere are deflected to the _____.
right
left
north
south
