Mon Prof Augmenté
Bent Rock, Sudden Crack
Open to everyone until Thursday, October 1
To keep it, print it while it is open.
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.
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.
Carry on in the app
Three questions on this lesson, to check the idea stuck. Free in the app while the lesson is in the free week.
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
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