LESSON 8: MOVEMENT OF PLATES Flashcards
Earth’s Surface is composed of ____ that are constantly moving.
tectonic plates
Tectonic Plates experience different types of forces
TENSION and COMPRESSION
occurs when the plates are pulled apart causing either an elongation or a breakage in a crust.
Tension
occurs when the plates are pushed toward each other causing them to crash.
Compression
occurs when the Earth’s crust bend away from a flat surface.
Folding
upward bend
Anticline
downward bend
SYNCLINE
it happens when the Earth’s crust completely breaks and slides past each other. Causes EARTHQUAKE to occur.
Faulting
Three Plate Boundaries:
- two plates move toward each other; oceanic oceanic, oceanic- continental.
Convergent boundaries
denser sinks over the other. Formation of TRENCHES and
Subduction
two plates move away from each other, MAGMA rises forming new land. Older rocks are pushed aside Formation of RIDGES
Divergent Boundaries
when plates move slide past each other, two plates move/slide in opposite direction. Formation of FAULTS
Transform faulth