Sea- Floor Spreading molten material erupts through the valley that runs along the center of some mid-ocean ridges. This material hardens to form the rock of the ocean floor. Mid-ocean ridges an undersea mountain chain where new ocean floor is produced.
Lava that cuts across rock layers hardens to form a disk.
Lava that cuts across rock layers hardens to form a feature called a Dike.
igneous rock
The substance that cools beneath the earths surface when an intrusive igneous rock forms is Magma. Magma is a molten material made up of rocks and minerals.
Igneous rock. Extrusive igneous rock forms at or near the surface, intrusive igneous rock forms below the surface.
Igneous rock is what forms when magma cools and hardens.
igneous rock.
Extrusive igneous rock.
Molten rock that flows onto the seafloor and hardens as it cools is called basalt. Basalt is the most common type of lava erupted at mid-ocean ridges and forms the oceanic crust.
Igneous rock.
intrusive rock froms when magma cools or hardens underneath the earth. :)
igneus rock
Lava that cuts across rock layers hardens to form a disk.
Most divergent boundaries are found beneath the oceans . Mid-ocean ridges form at these divergent boundaries . Because the plate s are pulling away from each other , cracks form in the lithosphere .Melted rock can rise through these cracks . When the melted rock cools and hardens , it becomes new lithosphere.
Lava that cuts across rock layers hardens to form a feature called a Dike.
Sill (D)
Igneous rock Explanation:because when it comes out a volcano it turns to lava and when it hardens then it will form an extrusive igneous rock specifically