Chapter 8 Study Guide Flashcards
Fault zone
An area of many fractured pieces of crust along a large fault
Transform fault
Where blocks/plates of crust slide horizontally past each other
Volcanic arc
A cured line of volcanos that forms parallel to a plate boundary. It is where plates converge, and one plate sub ducts under another.
Strain
A change in the shape of rock caused by stress.
Compression
Squeezing stress
Shearing
Parallel forces acting in opposite directions.
Tension
Stress that pulls something apart
Isostasy
The equal balance between continental crust and the denser mantle below it.
Plains
An extensive area of flat,level,gently rolling lands.
Basins
Areas of subsidence and regions with low elevations
Plateaus
Flat regions with high elevations
Subsidence
The downward vertical motion of Earth’s surface.
Subduction
The force that pushes surface rocks deep down as part of the rock cycle.
A continent floats on top of the mantle because the mass of the continent is equal to the mass the mantle it
Displaces
What can form where two plates converge?
Mountains,volcanic arcs,and ocean trenches
