Plate Tectonics

Front

What is a divergent boundary?

Back

A divergent boundary is a tectonic plate boundary where two plates move away from each other, often resulting in the formation of new crust.

Front

What landform is typically found at a divergent boundary between oceanic crust?

Back

Mid-Ocean Ridge.

Front

What is the theory of plate tectonics?

Back

The theory of plate tectonics states that the Earth's lithosphere is divided into tectonic plates that are in constant, slow motion due to convection currents in the mantle.

Front

What landform is typically found at a divergent boundary between continental crust?

Back

Rift Valley.

Front

What causes plate movement?

Back

Plate movement is caused by convection currents in the mantle.

Front

Who proposed the theory of continental drift?

Back

Alfred Wegener.

Front

What type of evidence did Alfred Wegener use to support his continental drift theory?

Back

Evidence from landforms, fossils, and climate.

Front

What is subduction?

Back

Subduction is the process where one tectonic plate moves under another and sinks into the mantle.

Front

What landform is typically created at a convergent boundary?

Back

Mountains or volcanic arcs.

Front

What is seafloor spreading?

Back

Seafloor spreading is the process by which new oceanic crust is formed at mid-ocean ridges and older crust is pushed away.