Front

What explains that Earth's outer layer is broken into large slowly moving pieces?

Back

Plate Tectonic Theory

Front

Which explains that the continents were once joined together and over time they broke up and then drifted apart?

Back

Continental Drift

Front

This boundary is described by two plates moving away from each other along the edges and separating. The resulting gap allows magma to rise and create new crust, forming new lithosphere.

Back

Divergent Boundary

Front

This boundary is described as two plates moving past each other ALONG THE EDGES horizontally. These boundaries will get stuck or lock against each other causing earthquakes when they slip and release.

Back

Transform Boundary

Front

This boundary is described as moving toward one another. When the plates are both continental plates, they will crumple up and form mountains. When they are continental and oceanic plates, subduction occurs and earthquakes and volcanoes form.

Back

Convergent Boundary

Front

Trenches, deep underwater canyons on the sea floor, are created at this type of boundary: Divergent, Convergent, Subduction Zone, Transform

Back

Convergent, Subduction Zone

Front

New crust is created at this type of boundary.

Back

Divergent

Front

Mountains are created at this type of boundary.

Back

Convergent

Front

Mid Ocean Ridge Formation is created at this type of boundary.

Back

Divergent

Front

What causes the movement of tectonic plates?

Back

Convection currents in the Asthenosphere