w3 Flashcards
what makes the plates move?
convection current
elastic or plastic-like
part of the mantle
asthenosphere
A force that acts on rock to
change its shape or volume.
stress
types of stress
Tensional stress
Compressional stress
Shear stress
happens at divergent boundaries
tensional stress
happens at convergent boundaries
compressional stress
happens at transform boundaires
shear stress
➡⬅
compressional stress
⬅➡
tensional stress
⬇⬆
shear stress
rocks get thinner in the middle
as it is pulled apart.
tensional stress
boundaries between two
plates that are colliding.
compressional stress
rock is pushed in two opposite directions or sideways.
shear stress
formed when rocks experience
compressive stress and deform,
causing the rocks to bend.
folds
types of folds
monocline
anticline
syncline