Oceanic ridges are elevated features because they are warm and therefore less dense than older, colder oceanic lithosphere.

Name: Oceanic ridges are elevated features because they are warm and therefore less dense than older, colder oceanic lithosphere.
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This is because oceanic ridges are areas of upwelling magma that create new oceanic crust, which is warmer and less dense than older, colder oceanic lithosphere. This results in the oceanic ridges being elevated above the surrounding seafloor.

Oceanic Ridges Are Elevated Features Because They Are Warm and Therefore