Key Idea.
Section 1
A Web of Pathways
The rock cycle is not a predictable, circular loop; it acts more like a complex web of possibilities. Rocks do not follow a set itinerary.
Plate motion is the driver that determines the path. An igneous rock might remain on the surface and erode into sediment, or it could be buried immediately and melt again. The path a rock takes depends entirely on how the plates move it.
Section 2
Continuous Recycling
Earth operates as a dynamic, recycling system. For billions of years, the planet has been reprocessing the same crustal material.
If a rock is pushed up, it becomes sediment; if it is pushed down, it becomes magma. This continuous transformation, fueled by the interplay of sunlight and internal heat, ensures that Earth's surface is constantly changing and renewing itself.
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Section 1
A Web of Pathways
The rock cycle is not a predictable, circular loop; it acts more like a complex web of possibilities. Rocks do not follow a set itinerary.
Plate motion is the driver that determines the path. An igneous rock might remain on the surface and erode into sediment, or it could be buried immediately and melt again. The path a rock takes depends entirely on how the plates move it.
Section 2
Continuous Recycling
Earth operates as a dynamic, recycling system. For billions of years, the planet has been reprocessing the same crustal material.
If a rock is pushed up, it becomes sediment; if it is pushed down, it becomes magma. This continuous transformation, fueled by the interplay of sunlight and internal heat, ensures that Earth's surface is constantly changing and renewing itself.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter