Ocean's Floor

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

A volcanic mountain that rises above the surface of the water is called ____________

• trench

• island

• mid-ocean ridge

• seamount

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

• seamount
• trench
• continental rise
• continental slope

If you are walking into the ocean you would be on the continental...

• shelf
• slope
• rise

the deepest part of the ocean

• trenches
• abyssal plain
• ocean basin
• rift

What is the difference between a volcanic island & a seamount?

• A volcanic island rises above the surface of the water & a seamount does not

• A seamount rises above the surface of the water & a volcanic island does not

• Both the seamount & volcanic island are underwater

• Both the seamount & the volcanic island rise above the water

sound waves used to make a map of the ocean floor

• ocean floor topography

• sonar

• seamount

• 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