Question

identify features of the sea floor. 5 of 5
did you see those long fracture zones as we went over the northern pacific?
look to the top of your screen. what is the large - scale feature running across the ocean floor in a curved path just offshore and to the south of the aleutian islands of alaska?
a new spreading center
an island arc
an ocean trench
an erosional canyon

Explanation:

To determine the seafloor feature south of the Aleutian Islands:

1. Recall seafloor features: Ocean trenches are deep, curved depressions at subduction zones, common near island arcs like the Aleutians (formed by Pacific plate subducting under North American plate).
2. Eliminate other options: A new spreading center is for seafloor spreading (not subduction), an island arc is the volcanic chain (not the curved depression), and an erosional canyon is smaller/terrestrial - like. The curved, large - scale feature offshore the Aleutians matches an ocean trench.

Answer:

An ocean trench