0930 Plate Boundaries

Front

What is a convergent boundary?

Back

A convergent boundary is where two tectonic plates collide, which can result in the formation of mountains, trenches, or volcanic activity.

Front

What geological feature is formed at a convergent boundary between two continental plates?

Back

Mountains are formed at a convergent boundary where two continental plates collide.

Front

What is a subduction zone?

Back

A subduction zone is a region where one tectonic plate slides under another, typically occurring at a convergent boundary between an oceanic plate and a continental plate.

Front

What is seafloor spreading?

Back

Seafloor spreading is the process that occurs at divergent boundaries where new oceanic crust is formed as magma rises to the surface.

Front

What geological feature is associated with seafloor spreading?

Back

Mid-ocean ridges are associated with seafloor spreading, where new oceanic crust is created.

Front

What is an island arc?

Back

An island arc is a chain of volcanic islands formed at a convergent boundary where an oceanic plate subducts beneath another oceanic plate.

Front

What is a trench?

Back

A trench is a deep, narrow depression in the ocean floor formed at a convergent boundary where an oceanic plate is subducted beneath another plate.

Front

What is a transform boundary?

Back

A transform boundary is where two tectonic plates slide past one another horizontally, leading to earthquakes.

Front

What happens at a divergent boundary?

Back

At a divergent boundary, tectonic plates move apart, leading to the formation of new crust, such as at mid-ocean ridges.

Front

What is the primary cause of tectonic plate movement?

Back

Tectonic plate movement is primarily caused by convection currents in the Earth's mantle.