3.0 - Seafloor Features

What is the process called when one tectonic plate is forced under another?

• Subduction

• Convergence

• Divergence

• Transform

What is the difference between oceanic and continental crust?

• Oceanic crust is denser and thinner than continental crust.

• Continental crust is denser and thinner than oceanic crust.

• Both oceanic and continental crust are equally dense and thick.

• Oceanic crust is thicker and less dense than continental crust.

What is the term for the flat, deep areas of the ocean floor?

• Abyssal Plain

• Continental Shelf

• Ocean Ridge

• Seamount

What is the term for the underwater mountain range formed by sea floor spreading?

• Mid-Ocean Ridge

• Continental Shelf

• Abyssal Plain

• Ocean Trench

What geological feature is formed at a divergent boundary?

• New oceanic crust.

• Mountain ranges.

• Volcanic islands.

• Deep ocean trenches.

What type of boundary occurs when two tectonic plates move apart?

• Divergent boundary.

• Convergent boundary.

• Transform boundary.

• Subduction boundary.

What happens to oceanic crust at a convergent boundary?

• It is subducted and recycled into the mantle.

• It rises and forms new landmasses.

• It remains unchanged and stable.

• It breaks apart and forms earthquakes.

What is the term for the area where oceanic and continental plates meet?

• Subduction zone.

• Divergence zone.

• Transform fault.

• Continental shelf.

What is the term for the steep slope between the continental shelf and the abyssal plain?

• Continental Slope

• Continental Rise

• Abyssal Hill

• Ocean Trench

What type of boundary is associated with subduction?

• Divergent boundary

• Transform boundary

• Convergent boundary

• Fault boundary