Ch. 9 Lesson 2 The Ocean Floor

The ocean floor is just as ​ ​ (a)   as the land above the water.

• varied
• flat
• rocky

This is the deepest part of the ocean floor and the flattest part on Earth.

• continental rise

• abyssal plain

• continental shelf

• continental slope

All ocean floors across the world can be divided into _ major regions.

This is the gradually sloping portion of the ocean floor that is made of continental crust.

• continental slope

• sea mount

• abyssal plain

• continental shelf

The continental slope is found at the border between ___________ ___________ and _______________ _____________.

• continental crust

• abyssal plain

• continental slope

• oceanic crust

When you wade into the ocean at the beach, you are actually walking along the ____________ __________.

• oceanic crust

• continental shelf

• continental slope

• continental rise

Choose the three major regions of the ocean floor.

• abyssal plain

• sea mount

• continental shelf

• continental slope

At the mid-ocean ridges, the tectonic plates of Earth's crust are being split apart. As the plates are pulled apart, __________________ pushes up from below.

• steam

• bubbles

• sand

• molten rock

Tags

NGSS.MS-ESS2-2

A deep-ocean ___________ is formed when two oceanic plates run into each other and the ocean crust sinks down into Earth's mantle, rolling under like a conveyor belt.

• volcano

• cliff

• trench

• sea mount

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Trenches are the deepest part of the ocean. Some of them plunge more than ________ feet below the surface.

• 3,000

• 300

• 3,300

• 33,000