Mon Prof Augmenté
Bent Rock, Sudden Crack
Age 12 · Science
Along the edge of a tectonic plate, rock slowly bends and stores energy over a long time. When the rock finally breaks, the ground shakes and nearby buildings can tilt.
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In the picture
- Rough stone slabs meeting at a seam
- Colored rock layers bent near the seam
- Jagged fracture cutting through the bent layers
- Concentric ripple rings spreading through soil
- Small building tilted at the ground surface
Examples
- A wooden ruler bent back until it suddenly snaps.
- A stretched rubber band slipping from your fingers.
Key takeaways
- Rock at plate edges can bend slowly for many years.
- When the bend breaks, the sudden movement shakes the ground.
Quiz: Bent Rock, Sudden Crack (Age 12)
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What can rock at the edge of a tectonic plate do for many years?
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What happens to energy in rock that is slowly bending at a plate edge?
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What happens when the bent rock finally breaks?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
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