Earth Science Geology, the Environment, and the Universe

Section 2: The Seafloor

Self-Check Quizzes-English

1
According to the graph, at what depth does the sea floor start to drop off?
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A)2 km
B)1 km
C)4 km
D)8 km
2
What is the shallowest part of the continental margin called?
A)the continental rise
B)the continental shelf
C)the shelf break
D)a submarine canyon
3
__________ are submerged basaltic volcanoes more than 1 km high.
A)Seamounts
B)Shelf breaks
C)Submarine canyons
D)Fracture zones
4
What is the dominant type of sediment on the ocean floor?
A)mud
B)sand
C)oozes
D)diatom shells
5
What are the deepest parts of the ocean basins?
A)abyssal plains
B)deep-sea trenches
C)mid-ocean ridges
D)hydrothermal vents
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