It stresses it and causes cracks.
it means earthquakes will happen more often
The earth's crust is not stress
It causes it to deform - this deformation is called "strain".
Compression Stress Tension Stress Shearing Stress
The movement in earths plates create powerful forces that pull or squeeze the rock in the crust.
Tension
Stress forces squeeze or pull the rock in the Earth's crust.
Deformation
Plate motions produce stress in Earths crust that leads to faults, mountain building, and earthquakes.
I found that folding happens
It can be the cause of folding, faulting, mountains, volcanoes, earthquakes, and rifts.
Erosian, weathering.