Author Question: What is a characteristic of transform faults? a. They are fractures along two plates that slide ... (Read 59 times)

tiara099 · **on:** Aug 22, 2018

What is a characteristic of transform faults?
a. They are fractures along two plates that slide vertically.
b. They move in opposite directions, horizontally of each other.
c. They are just as active as fracture zones.
d. All of these choices are true.

Question 2

What is a disadvantage of using multibeam echo systems to map the entire seafloor?
a. It can only detect a single narrow corridor of the seafloor.
b. There are many beams that radiate from the ship's hull.
c. There are very few vessels that are actually outfitted with these systems.
d. The systems send a pulse of sound every ten seconds.

ricroger · **Reply #1 on:** Aug 22, 2018

Answer to Question 1

ANS: D
Transform faults are fractures along which lithospheric plates move horizontally. Transform faults are
the active part of fracture zones and move in the same direction. Information can be found in the
section The Topography of Deep-Ocean Basins Differs from That of the Continental Margins.

Answer to Question 2

ANS: C
The multibeam echo system was more reliable and gave better resolution than single beam systems.
Unfortunately, there are fewer than 200 vessels equipped with the multibeam system. It would be
impossible to map the entire ocean in a reasonable amount of time. Information can be found in the
section Ocean Floor Is Mapped by Bathymetry