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Undersea Landscapes
What is the general texture of continental shelves?
Oceanography is
Undersea Landscapes
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1
Oceanography is
a science that deals with the way the rivers are used.
a science that deals with seagoing vessels.
a science that deals with man's make-up.
a science that deals with the seas.
2
What is the general texture of continental shelves?
Smooth terrain
Repeating patters of ridges and valleys.
Irregular slopes
There is not a regular texture.
3
A very large mountain range running along the center of the ocean floor
Ocean Ridge
Coral Reef
Ocean Peaks
Glaciation
4
Topography is
the study of the apex of seamounts.
the study of the top of the food chain
the study of the ocean surface.
the study of the shape and features of land surfaces.
5
What is the main underwater feature in the southern and southeastern Pacific Ocean?
The Mid-Atlantic Ridge
The East Pacific Rise
The Mid-Indian Ocean Ridge
The Australia Ridge
6
Rapidly moving underwater currents carrying debris and sediments
Countercurrent
True current
Turbidity current
Rapid tides
7
The steep descent of the seabed from the Continental Shelf to the abyssal zone
Continental Rift
Continental Shelf
Continental Slope
8
What is the main difficulty to bringing up the valuable nodules located on the bottom of the Pacific Ocean?
There is no difficulty. They are mined each year in great quantities.
They lie in water so deep they cannot be easily retrieved.
They are easily damaged and difficult to bring up in their pure form.
Without adequate light it is difficult to spot them in the deep ocean.
9
In what part of the oceans do most of the sea vegetation and saltwater fishes and animals exist?
There is an even distribution of life throughout the ocean
The continental shelves
The continental slopes
The deep ocean floor
10
Beyond the continental shelf, the ocean bottom drops off
not at all
very gradually
suddenly
about 7 to 10 feet per mile
11
How are submarine canyons formed?
Underwater currents and landslides
All of the above
Tidal currents
Glaciation
12
Echo sounding is used to determine the
speed of water as it moves.
physical and chemical properties of the sea.
depth to the ocean bottom.
speed of sound in water.
13
The bottom of the ocean is referred to as the deep ocean, the deep sea, the deep ocean basin or the
abyss
seamount
summit
height
14
Coring tubes are used to
collect sands from the continental shelf and slope.
collect ocean bottom sediments at different depths.
collect water samples.
15
Where would you most likely find a guyot?
Antarctica
Arctic Ocean
Pacific Ocean
Atlantic Ocean
16
The deep ocean floor (the true bottom of the ocean) begins at the bottom of the __________ and extends seaward.
continental slope
continental rise
continental shelf
continental floor
17
Man knows more about outer space than he knows about the ocean.
False
True
18
A former coral island which has been eroded and subsided below the surface of the ocean
.
Atoll
Submerged waterfall
Ocean eruption
Seamount
19
What type of map shows different heights of the earth's surface using shading, colors or lines?
Relief Maps
Navigational Maps
Contour Maps
Mercator Projections
20
The mountain ranges in the oceans are called ocean ridges.
False
True
