Question

MEDAL AND FAN
Which phrase best describes subduction?


A.


movements of tectonic plates across the earth's surface


B.
sinking of one tectonic plate under another


C.
spreading apart of two tectonic plates


D.
collision between two tectonic plates

Answer 1

the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate. [dic]

Answer 2

sinking of one tectonic plate under another

Answer 3

in other words - B

Answer 4

yes

Answer 5

A subduction zone is a convergent boundary where two tectonic plates collide. Plates are large, dense masses in the crust of the Earth, the lithosphere, that float on top of liquefied rock in the asthenosphere. They are constantly shifting and moving, so when they subduct, one pushes beneath the other. These zones create geologic formations such as mountain ranges, ocean trenches, and island arcs, as well as phenomena like earthquakes and volcanoes.
http://www.wisegeek.org/what-is-a-subduction-zone.htm
So I go with B