MS Ocean Floor Margins and Earthquakes

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

• trench
• continental shelf
• continental slope
• abyssal plain

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

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

an underwater mountain chain where new ocean floor is formed

• mid-ocean ridge

• seamount

• guyot

• abyssal plain

The largest ocean in the world is the

• Atlantic

• Pacific

• Indian

• Arctic

• Southern

The flattest area of the ocean is known as the _________________________.

• Rift Zone

• Abyssal Plain

• Mid-ocean Ridge

• Subduction zone

Where do many earthquakes and volcanoes occur along the Pacific Ocean?

• along the Mid-Atlantic Ridge
• along the Nazca Plate
• along the Ring of Fire
• near India