Ocean Floor

Created by a divergent boundary.

• Rocky Mountains
• Mariana Trench
• Mid Atlantic ridge

During sea floor spreading, molten material rises up from the mantle...

• along the continents
• at the mid ocean ridges
• deep ocean trenches
• at north and south poles

Which of the following is where one plate slides under another plate?

• submarine zone
• divergence zone
• subduction zone
• lower zone

Which ocean is expanding due to a mid-ocean ridge?

• Indian
• Dead Sea
• Atlantic
• Artic

What is a divergent boundary? 

• two plates moving towards each other
• two plates rubbing side to side
• two plates moving away from each other
• happens in the lithosphere

What is one piece of evidence of seafloor spreading? 

• age of the rocks
• old rock pushes new rock to the side
• scientist can use sonar
• subduction

What kind of plate boundary is shown here?

• divergent
• convergent
• transform
• subducting

What kind of plate boundary is shown here?

• divergent
• convergent
• transform
• submergent

Plates move towards one another at ______________ boundaries.

• divergent
• convergent
• transform
• detergent

What is letter C pointing to? 

• abyssal plain
• seamount
• mid-ocean ridge
• continental shelf