Plate Tectonics

Front

What type of boundary is associated with the formation of new crust?

Back

Divergent boundary.

Front

What does sea-floor spreading explain?

Back

New crust is created at a divergent boundary.

Front

Which type of crust subducts under another plate to form volcanoes?

Back

Oceanic crust.

Front

Where does magma that erupts from volcanoes come from?

Back

Melted oceanic crust.

Front

Which type of tectonic boundary does NOT involve magma?

Back

Transform boundary.

Front

What is the process called when tectonic plates move apart?

Back

Divergence.

Front

What is a convergent boundary?

Back

A boundary where two tectonic plates collide.

Front

What is subduction?

Back

The process where one tectonic plate moves under another plate.

Front

What geological feature is formed at a divergent boundary?

Back

Mid-ocean ridges.

Front

What is the Ring of Fire?

Back

A region in the Pacific Ocean where many earthquakes and volcanoes occur.