Plate tectonics is like a "conveyor belt," with new material created at _____, and old material recycled back into the mantle at _____.
A)trenches; subduction zones
B)mid-ocean ridges; subduction zones
C)convergent boundaries; subduction zones
D)subduction zones; mid-ocean ridges
E)mid-ocean ridges; rift zones

Question

Plate tectonics is like a "conveyor belt," with new material created at _____, and old material recycled back into the mantle at _____. ​
A)trenches; subduction zones
B)mid-ocean ridges; subduction zones
C)convergent boundaries; subduction zones
D)subduction zones; mid-ocean ridges
E)mid-ocean ridges; rift zones

Quizplus · Accepted Answer

New material is created at mid-ocean ridges where tectonic plates are diverging, and old material is recycled back into the mantle at subduction zones where one tectonic plate is forced under another.

Plate Tectonics Is Like a "Conveyor Belt," with New Material