Ocean Floor, Currents and Tides REGENTS

On the map below, points A through D represent locations on Earth's surface.
Which location is positioned over a mantle hot spot?

• A
• B
• C
• D

The formation of the Canary Islands was primarily caused by their location near a

• subduction zone 
• mantle hot spot
• divergent boundary
• transform fault

Base your answer on the block diagram below, which shows a tectonic plate boundary.
Compared to the oceanic crust, the continental crust is

• more dense and more mafic
• more dense and more felsic
• less dense and more mafic
• less dense and more felsic

The Mariana Trench was most likely created by the

• convergence of the philippine plates and pacific plates
• divergence of the Eurasian and Philippine plates
• sliding of the Pacific Plate past the North American Plate
• movement of the Pacific plate over the Hawaii Hot spot

The map below shows a part of Earth’s surface. Points A through D are locations on the ocean floor.
At which location is the temperature of the ocean floor bedrock most likely highest?

• A
• B
• C
• D

Which type of tectonic plate boundary is located at mid-ocean ridges?

• CONVERGENT 
• TRANSFORM
• DIVERGENT
• COMPLEX

The diagram below shows the magnetic polarity preserved by minerals within the bedrock of the oceanic crust near the Mid-Atlantic Ridge. Letters A, B, C, and D represent locations in the ocean-floor bedrock.
The most recently formed bedrock is found at location

• A
• B
• C
• D

Which ocean current provides warm water that moderates the climate of South America?

• Benguela Current 
• Brazil Current
• Falkland Current
• Peru Current 

Which two ocean currents are both warm currents that primarily flow away from the equator?

• Guinea and Labrador Current
• Brazil and Agulhas Currents
• Alaska and Falkland Current
• Canaries and Gulf Stream Current

The California Ocean Current, which flows along the west coast of North America, is a

• Cool current, flowing nouth
• cool current, flowing south
• warm current, flowing north
• warm current, flowing south