The aleutian islands extend westward from southern Alaska to form the northern boundary of the Pacific Ocean. These volcanic isl
ands were formed by the nearby... A. subduction of a continental plate
(B. subduction of an oceanic plate)-answer but why is this the answer?
C. divergence of a continental plate
D. divergence of an oceanic plate
Aleutian islands extend westward from southern Alaska to form the northern boundary of the Pacific Ocean when the Pacific plate gets subducted under North American Plate at a dip of 45 degrees. The pacific is an oceanic tectonic plate that lies beneath the Pacific Ocean. And thus the correct answer is option B
A closed circuit doesn't allow the flow of electrons. an open circuit does. example: if you turn off a switch in your house. you 'broke the circuit it is closed.