: an elevated region with a central valley on an ocean floor at the boundary between two diverging tectonic plates where new crust forms from upwelling magma.

List of mid-ocean ridges

• Kolbeinsey Ridge – A segment of the Mid-Atlantic Ridge north of Iceland in the Arctic Ocean.
• Mohns Ridge.
• Knipovich Ridge (between Greenland and Spitsbergen)
• Reykjanes Ridge (south of Iceland)

Mid-ocean ridges and transform margins have shallow earthquakes (usually less than 30 km deep), in narrow bands close to plate margins. Subduction zones have earthquakes at a range of depths, including some more than 700 km deep.

Hot magma rises from the mantle at mid-ocean ridges, pushing the plates apart. Earthquakes occur along the fractures that appear as the plates move apart. When the boundary is between an oceanic plate and a continental plate, it is also referred to as a destructive plate boundary.

An oceanic spreading ridge is the fracture zone along the ocean bottom where molten mantle material comes to the surface, thus creating new crust. This fracture can be seen beneath the ocean as a line of ridges that form as molten rock reaches the ocean bottom and solidifies.

Friction ridge patterns are grouped into three distinct types—loops, whorls, and arches—each with unique variations, depending on the shape and relationship of the ridges: Loops – prints that recurve back on themselves to form a loop shape.

1 : an elevated body part or structure. 2a : a range of hills or mountains. b : an elongate elevation on an ocean bottom. 3 : an elongate crest or a linear series of crests. 4 : a raised strip (as of plowed ground)

Answer: The center slit stands for the passage where the molten material can enter the Mid-Ocean Ridge, formed by the converging of plates. The side slits stand for where subduction has occurred and the ocean floor has sunk in. Also, the space under the paper stands for the oceanic crust of the Earth.