PRESENTATION OUTLINE
Plate tectonics
Pieces of earths lithosphere are in slow constant motion,driven by convection currents in the mantle.
Convection currents
The transfer of heat by the mass movement of heated particles.
Gravity
The force that attracts a mass toward the center of the earth.
Sea floor spreading
Process when new crust is formed through volcanic activity and moves away from the ridge.
Divergent boundary
A plate boundary where two plates move away from each other.
Landform resulting from divergent plat boundary.
East Africa Rift Valley
Landform resulting from a divergent plate boundary.
Mid ocean ridge
Convergent boundary
A plate boundary where two plates move toward each other.
Resulting landform from Oceanic vs Continental
Trench with a volcanic arch forms.
Resulting landform from Oceanic vs Oceanic
Trench with island arch or underwater volcanic arch forms
Resulting landform from Continental vs Continental
Mountain ranges form
Subduction zone
Area of Earth’s crust where tectonic plates meet.
Deep ocean trench
Long deep depression in the ocean floor.
Deep ocean trench
Marian trench
Transform plate boundary
Two plates slide past each other.
Resulting event from transform boundary
Causes earthquakes
Example of transform plate boundary
San Francisco earthquake
