Mapping Ocean Depths and Features

The video tutorial covers ocean topography, focusing on the study of the ocean floor's features. It explains how scientists use sonar and satellites to map the ocean floor. The tutorial details the two main parts of the ocean floor: the continental margin and the ocean basin. The continental margin includes the continental shelf, slope, and rise, while the ocean basin features the abyssal plain, mid-ocean ridge, oceanic trenches, and seamounts. The video concludes with a brief mention of volcanic islands formed from seamounts.

What is the primary tool used by scientists to map the ocean floor?

• Radar

• Sonar

• Lidar

• Infrared

Which part of the ocean floor is closest to the beach?

• Mid-ocean ridge

• Continental shelf

• Abyssal plain

• Continental rise

What is the main function of the continental rise?

• To form mountains

• To collect sediment

• To create valleys

• To support marine life

What is the flat part of the ocean floor called?

• Oceanic trench

• Seamount

• Abyssal plain

• Continental slope

Where are rift valleys typically found?

• At the continental rise

• In oceanic trenches

• On seamounts

• At mid-ocean ridges

What is the longest underwater mountain chain called?

• Oceanic trench

• Seamount

• Mid-ocean ridge

• Continental rise

What causes the formation of oceanic trenches?

• Erosion

• Transform faults

• Convergent plate boundaries

• Divergent plate boundaries

Which oceanic feature is the deepest part of the ocean?

• Seamount

• Mariana Trench

• Abyssal plain

• Mid-ocean ridge

What is a seamount?

• A type of coral reef

• An underwater mountain

• A deep ocean trench

• A flat area on the ocean floor

How is a volcanic island formed?

• By tectonic plate divergence

• By sediment accumulation

• By a seamount rising above sea level

• By erosion of a seamount