NS2-M3C4 Undersea Landscapes (Exam)

(off the California coast), or upwards of 800 miles (off the Arctic coast of Russia). What

have most maritime nations agreed to regarding the continental shelf being a part of the

land?
A It is part of the land out to a depth of 200 meters

B It is not a part of the land.

C The entire shelf is part of the land.

D It is part of the land if it contains fuel.
2 The deep ocean floor (the true bottom of the ocean) begins at the bottom of the

__________ and extends seaward.

B continental floor

C continental shelf

D continental slope

(Input all that apply, then push the ENTER button.)

B oceanic crust

C lava cooled rapidly above the Earth’s surface

D speckled whitish color

B Pacific Ocean

C Atlantic Ocean

D Arctic Ocean

Atlantic Ocean, the sediment accumulates slowly- about _______ of sediment in

_________.
A 1 cm; 100 years

B 1 cm; 1000 years

C 1 m; 1000 years

D 1 m; 100 years

B Ocean Peaks

C Ocean Ridge

D Glaciation

B Submerged waterfall

C Seamount

D Ocean eruption

B True current

C Countercurrent

D Turbidity current

recording the time until the echo returns from the bottom

B Echo sounder

C Depth meter
10 The steep descent of the seabed from the Continental Shelf to the abyssal zone
A Continental Shelf

B Continental Rift

C Continental Slope
11 What is the general texture of continental shelves?
A Irregular slopes

B Smooth terrain

C There is not a regular texture.

D Repeating patters of ridges and valleys.

NS2M3C4 - Undersea Landscapes (Exam) Page 3
12 In what part of the oceans do most of the sea vegetation and saltwater fishes and animals

exist?
A The continental shelves

B There is an even distribution of life throughout all of the areas of the oceans

C The deep ocean floor

D The continental slopes

E The abyss

B The East Pacific Rise

C The Mid-Atlantic Ridge

D The Mid-Indian Ocean Ridge

Pacific Ocean?

B They lie in water so deep they cannot be easily retrieved.

C They are easily damaged and difficult to bring up in their pure form.

D There is no difficulty. They are mined each year in great quantities.

E They weigh so much that it is difficult to get strong enough cable to bring

them up.
15 What type of map shows different heights of the earth's surface using shading, colors or

lines?
A Contour Maps

B Relief Maps

C Navigational Maps

D Mercator Projections

B Underwater currents and landslides

C Tidal currents

D All of the above

E None of the above

NS2M3C4 - Undersea Landscapes (Exam) Page 4

basin or the

B summit

D seamount

B depth to the ocean bottom.

C speed of water as it moves.

D speed of sound in water.

B collect water samples.

C collect ocean bottom sediments at different depths.
20 Beyond the continental shelf, the ocean bottom drops off
A not at all

B very gradually

C about 7 to 10 feet per mile

D suddenly

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