Continental Drift/Seafloor Spreading

Front

Undersea mountain chain where new ocean floor is produced at a divergent plate boundary is a ____________

Back

Mid-ocean ridge

Front

Deep underwater canyons where ocean floor sinks back into mantle are called ____________

Back

Deep ocean trench

Front

During sea-floor spreading, crust is ____________

Back

Created

Front

Process by which molten material adds new oceanic crust to the ocean floor is ____________

Back

Sea-floor spreading

Front

Who was the scientist who hypothesized continental drift?

Back

Wegener

Front

The theory that continents have moved over geological time is known as ____________

Back

Continental drift

Front

The movement of tectonic plates is driven by ____________

Back

Convection currents in the mantle

Front

The area where two tectonic plates meet is called a ____________

Back

Plate boundary

Front

The process of one tectonic plate sliding under another is called ____________

Back

Subduction

Front

The geological feature formed at convergent boundaries where plates collide is a ____________

Back

Mountain range or trench