Plate Tectonics

Front

What is the hypothesis of continental drift?

Back

The continents were once joined together in a single landmass.

Front

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

Back

Mid-Ocean Ridge.

Front

What is the theory that states pieces of Earth's lithosphere are in constant, slow motion?

Back

Plate tectonics.

Front

What type of plate boundary occurs when two plates move away from each other?

Back

Divergent boundary.

Front

What is a convergent boundary?

Back

A boundary where two plates move towards each other, often causing one plate to be forced below the other.

Front

What is a transform boundary?

Back

A boundary where two plates slide past each other horizontally.

Front

What geological feature is formed at a convergent boundary?

Back

Mountains or deep ocean trenches.

Front

What is subduction?

Back

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

Front

What is seafloor spreading?

Back

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

Front

What is the lithosphere?

Back

The rigid outer layer of the Earth, consisting of the crust and upper mantle.