Ocean floor notes

The large, flat part of the ocean floor is called the _____________. 

• trench
• continental shelf
• continental slope
• abyssal plain

What do you call an underwater mountain?

• trench
• abyssal plain
• seamount
• volcanic island

What is a deep, underwater valley or canyon on the ocean floor?

• seamount
• trench
• continental rise
• continental slope

the steep drop-off between the outer edge of the continental shelf and the deep ocean floor

• continental shelf

• guyot

• continental slope

• trench

the underwater edge of a continent

• continental slope

• trench

• continental shelf

• abyssal plain

an underwater mountain chain where new ocean floor is formed

• mid-ocean ridge

• seamount

• guyot

• abyssal plain

A deep undersea valley located along the center of the mid- ocean ridge

• guyot

• seamount

• continental shelf

• rift

the natural and artificial features existing on the ocean floor

• seamount

• continental shelf

• sonar

• ocean floor topography

sound waves to detect and determine the location, size, and relative motion of underwater objects

• ocean floor topography

• sonar

• seamount

• continental slope

Massive pieces of land that are part of the Earth's crust and upper mantle

• Tectonic plates
• Trenches
• Divergent boundary
• Continental shelves