Ocean Floor Features and Processes

The video provides an in-depth look at oceanography, focusing on the ocean floor's features. It explains methods like echo sounding and satellite mapping to study ocean depth. The video distinguishes between active and passive continental margins, explores ocean basin features such as abyssal plains and seamounts, and describes the formation of coral reefs and atolls. It concludes with an explanation of trenches and mid-ocean ridges, highlighting their role in plate tectonics.

What is the primary method used by ships to determine the depth of the ocean floor?

• Satellite imaging

• Diving expeditions

• Echo sounding

• Underwater cameras

What is the term for the area from the coastline to the drop-off in the ocean?

• Abyssal plain

• Ocean basin

• Continental slope

• Continental shelf

Which feature is characterized by a gently sloping region between the continental slope and the ocean floor?

• Seamount

• Guyot

• Trench

• Continental rise

What is the flattest area of Earth's surface, located at the bottom of the ocean?

• Continental shelf

• Abyssal plain

• Mid-ocean ridge

• Rift valley

What is a seamount?

• A flat-topped mountain

• A coral reef formation

• A deep ocean trench

• A cone-shaped mountain peak

How is an atoll formed?

• By volcanic activity

• By tectonic plate movement

• By sediment deposition

• By coral reefs growing around a sinking island

What is the main cause of a trench in the ocean floor?

• Sediment accumulation

• Convergent plate boundaries

• Coral reef growth

• Divergent plate boundaries

What geological feature is formed by two plates moving apart?

• Seamount

• Mid-ocean ridge

• Guyot

• Trench

What is a rift valley?

• A deep ocean trench

• A coral reef formation

• A flat-topped seamount

• A valley formed by diverging tectonic plates

Which feature is typically found in the middle of the ocean and is associated with new crust formation?

• Abyssal plain

• Continental rise

• Mid-ocean ridge

• Trench