Seafloor Features Quiz

What is the primary geological feature found at mid-ocean ridges?

• Deep ocean trenches

• Volcanic mountain ranges

• Underwater flat plains

• High seismic activity areas

Which of the following best describes abyssal plains?

• Areas with frequent volcanic eruptions

• The deepest parts of the ocean

• Very flat, deep underwater areas

• Regions rich in marine life

Oceanic trenches are typically associated with which type of plate boundary?

• Transform boundaries

• Divergent boundaries

• Convergent boundaries

• None of the above

What is a seamount?

• A submerged mountain range on the ocean floor

• A flat area on the continental shelf

• A deep valley in the ocean floor

• A shallow region near coastlines

The continental shelf is characterized by which of the following?

• Being part of the deep ocean basin

• Steep, almost vertical slopes

• Shallow, gently sloping underwater landmass

• High tidal waves

Which feature forms the outermost part of the continental margin?

• Continental rise

• Continental slope

• Continental shelf

• Abyssal plain

Mid-ocean ridges are primarily formed by which geological process?

• Subduction

• Sea-floor spreading

• Erosion

• Sediment deposition

Which of the following is NOT a characteristic of oceanic trenches?

• They are the deepest parts of the ocean

• They are formed by volcanic activity

• They are associated with subduction zones

• They can trigger earthquakes

Seamounts are important because they:

• Are often rich in minerals

• Support diverse marine ecosystems

• Can become islands

• All of the above

What is the primary difference between a seamount and an abyssal hill?

• Height above the seafloor

• Geological composition

• Location in the ocean

• Age of formation