Ocean Floor Features and Processes

The video explores the diverse geology of the ocean floor, highlighting features like the continental shelf, slope, and rise, as well as the ocean basin floor with its trenches and volcanic formations. It discusses the challenges of studying the ocean floor, the use of satellite gravity maps, and the impact of historical sea level changes. The video also covers the mid-ocean ridge and hydrothermal vents, emphasizing the mysteries and potential resources of the ocean depths.

What technology is primarily used to map the ocean floor from space?

• Infrared

• Lidar

• Radar

• Sonar

What is the average depth of the continental shelf?

• 80 meters

• 130 meters

• 300 meters

• 200 meters

During the last ice age, what happened to the continental shelves?

• They were submerged underwater

• They became dry land

• They formed new islands

• They eroded completely

What feature is formed by currents of dense water on the continental slope?

• Seamounts

• Mid-ocean ridges

• Abyssal plains

• Submarine canyons

What is the term for the region between the continental slope and the ocean basin floor?

• Continental rise

• Abyssal plain

• Ocean trench

• Continental margin

What percentage of Earth's surface is made up by the ocean basin floor?

• 20%

• 40%

• 50%

• 30%

What distinguishes a geo from a seamount?

• Geos are active volcanoes

• Geos are found only in the Pacific Ocean

• Geos are eroded on top

• Geos are cone-shaped

What is the primary cause of the formation of mid-ocean ridges?

• Converging oceanic plates

• Diverging oceanic plates

• Sediment accumulation

• Erosion by ocean currents

What are hydrothermal vents known for?

• Forming coral reefs

• Being the deepest part of the ocean

• Emitting cold water

• Releasing mineral-rich hot water

What is an atoll?

• A type of seamount

• A ring-shaped reef with a lagoon

• A deep ocean trench

• A type of hydrothermal vent