PRESENTATION OUTLINE
Plate Tectonics:
The theory in which pieces of the Earth's lithosphere are in slow constant motion, driven by convection currents in the mantle
Convection Currents
A force that pushes pieces of the Earth's lithosphere in the mantle.
Gravity
A force that pulls objects toward the center of the Earth.
Sea-Floor Spreading
The process that continually adds new material to the ocean floor.
Divergent Plate Boundary:
A boundary where plates are moving apart.
Rift Valley:
The East African Rift
Mid Ocean Ridge:
The Mid Atlantic Ridge
Convergent Plate Boundary:
The place where two plates converge.
A Trench with Volcanic Arc:
South Aegean Volcanic Arc
Underwater Volcanic Arc:
Hunga Ha'apai
Mountain Range:
The Rocky Mountains
Subduction zone:
An area in which the process of ocean crust sinking beneath a deep ocean trench and back into the mantle.
Deep ocean trench:
A long, narrow, steep sided depression in the ocean floor.
An example of a deep ocean trench:
Challenger Deep
Transform plate boundary:
The place where two plates slip past each other, moving in opposite directions.
Resulting event from transform boundary:
Earthquakes
An example of transform plate boundary:
Alpine Fault
