Mod+5.6+-+Carly+G

Dynamic Earth

 * a lot of major plates
 * the plates make up Earth's outer shell
 * three types of tectonic boundaries, convergent, divergent, and transform
 * __Convergent:__ where plates move into one another
 * __Divergent__: where plates move apart
 * __Transform:__ where plates move sideways in relation to each other

Convergent Boundaries:

 * mountains grow every day
 * occure where a plate of ocean dives
 * overlying plates lift up to form mountain ranges
 * ocean- ocean convergences cause one plate to dive beneath the other forming deep trenches
 * can also cause underwater volcanoes
 * Examples:**
 * The Mariana Trench
 * The Tonga Trench
 * Sunda Double

Divergent Boundaries:

 * magma from the Earth's mantle rises toward the surface and pushes plates
 * the process renews the ocean floor
 * the process widens the giant basins
 * giant troughs form where plates are tugged apart
 * if plates continue to diverge, eventually eastern Africa will separate from the continent to form a new land mass
 * Examples:**
 * Red Sea Rift
 * East African Rift Zone
 * Mid- oceanic Ridge

Transform Boundaries:

 * two plates grind past each other along strike- slip faults
 * trigger large earthquakes


 * Examples:**
 * San Andrea's Fault
 * Alpine Fault
 * North Anatolian Fault