A plate boundary where two plates move toward each other

Convergent boundary

Circular currents in the mantle are caused by heat given off by the core of the Earth

convection currents.

1. Pangaea

1. A famous supercontinent that existed about 225 million years ago and has since broken up

1. Lithosphere

1. outer most layer of the Earth containing the crust and uppermost rigid part of the mantle

1. A plate boundary where two plates move past each other in opposite directions

1. Transform

1. Mid ocean ridge

1. underwater mountain chain formed as tectonic plates spread apart, wraps around the globe like the seam of a baseball.

1. Deep Ocean Trenches

1. What occurs at a convergent boundary

1. Subduction zone

1. a boundary where two plates converge, and because of differences in density, one dives beneath the other.

1. Theory of Plate Tectonics

1. scientific theory that explains how volcano formation, earthquakes, mountains formation, and the changing positions of continents is caused by movements of lithospheric plates.

1. Ocean trench

1. a long narrow trench in oceanic crust usually lying above a subduction zone.

1. lithosphere

1. The solid and rigid outer layer of the Earth that includes the crust