Plate Tectonics

The soft layer of the mantle on which the lithosphere floats. It moves extremely slow, just a few cm per year.

The preserved remains or traces of an organism that lived in the past.

The layer of hot, solid material between Earth's crust and core (most of Earth's mass).

A layer of molten iron and nickel that surrounds the inner core of Earth (liquid).

Alfred Wegener, a German scientist, is famous for discovering which scientific theory?

What does the following data say about the seafloor?

True or False: New Oceanic Crust is made at Divergent Plate Boundaries

Divergent boundary in the middle of the Atlantic Ocean, 12,000 miles long, runs through Iceland.

A dense sphere of solid iron and nickel at the center of Earth.

A rigid (rocky) layer made up of the uppermost part of the mantle and the crust.

Cycle caused by rising of heated fluid and sinking of cooled fluid. This pushes tectonic plates across earth's surface.

Large sections of the Earth's crust that move due to convection currents; edges are marked by earthquakes and volcanoes.

Boundary between tectonic plates in which two plates move away from each other, and new crust is created between them.