The Theory of Plate Tectonics

Front

A section of the lithosphere that slowly moves over the asthenosphere.

Back

plate

Front

The theory that pieces of Earth’s lithosphere are in constant motion.

Back

Theory of Plate Tectonics

Front

What is the source of plate tectonic movement?

Back

convection currents

Front

How far can plates move in 1 year?

Back

2.5 cm - 15 cm

Front

True or False: Oceanic crust is newer and more dense than continental crust.

Back

True

Front

Plate boundary where plates divide, or move apart from one another.

Back

Divergent Boundary

Front

Plate boundary where plates collide and one boundary sinks below the other one.

Back

Convergent (Subduction) Boundary

Front

Plate boundary where continental plates collide.

Back

Convergent (Collision) Boundary

Front

Plate boundary where plates slide horizontally past each other.

Back

Transform Boundary

Front

What type of plate boundary causes mid-ocean ridges?

Back

Divergent Boundary