Key Idea.
Section 1
Magma Formation
Magma is simply rock that has undergone a phase change. Deep underground, intense heat melts solid rock into this thick, flowing liquid.
Magma serves as the raw material for all igneous rocks. Whether it remains trapped beneath the surface or erupts as lava, this molten substance holds the potential to become new solid land.
Section 2
Cooling and Solidification
The formation of igneous rock is a physical change driven by energy loss. When magma moves to a cooler environment—either near the surface or into cold air/water—it loses its thermal energy.
This drop in temperature causes the liquid magma to freeze and harden. This process is called solidification (or crystallization). Once the magma turns completely solid, it has transformed into igneous rock.
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Section 1
Magma Formation
Magma is simply rock that has undergone a phase change. Deep underground, intense heat melts solid rock into this thick, flowing liquid.
Magma serves as the raw material for all igneous rocks. Whether it remains trapped beneath the surface or erupts as lava, this molten substance holds the potential to become new solid land.
Section 2
Cooling and Solidification
The formation of igneous rock is a physical change driven by energy loss. When magma moves to a cooler environment—either near the surface or into cold air/water—it loses its thermal energy.
This drop in temperature causes the liquid magma to freeze and harden. This process is called solidification (or crystallization). Once the magma turns completely solid, it has transformed into igneous rock.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter