Plate Tectonics
Plate tectonics is the big-picture story of how Earth’s outer shell is broken into moving plates. Where those plates meet, they build mountains, open rifts, trigger earthquakes, and fuel volcanic activity. It’s one of the key ideas in Earth science because it connects rocks, landforms, and natural hazards into one system.
Learning Path
Plate Tectonics and Earthquakes
Get a visual overview of how moving plates create stress, release energy, and reshape the planet.
Open →Plate Tectonics Explorer
Experiment with plate movement and boundary interactions to see how different settings change the landscape.
Open →Earthquake-Proof Building Lab
Test how building design affects safety when the ground shakes, and connect tectonics to real-world engineering.
Open →Plate Boundary Types Detailed
Use this quick reference to compare the main boundary types and the features they commonly produce.
- Convergent boundaries push plates together, often forming mountains, trenches, and subduction zones.
- Divergent boundaries pull plates apart, creating rifts and new crust at mid-ocean ridges.
- Transform boundaries slide plates past each other and are strongly linked to earthquakes.
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Common Questions
What is plate tectonics?
Plate tectonics is the theory that Earth’s outer layer is broken into large plates that slowly move over the mantle and interact at their edges.
Why do plate boundaries cause earthquakes and volcanoes?
Boundaries concentrate stress, melting, and movement. When plates stick, slide, or sink, energy can be released as earthquakes, and melting can feed volcanic eruptions.