yes Flashcards
plate tectonics
parts of the earths lithosphere that are in constant motion.
divergent boundary
plates divide
convergent boundary
plates collide
transform boundary
plates slide passed eachother
convection currents
this makes the plates move
pangea
a large landmass that began to break a part 200 million years ago.
Continental Drift
Alfred Wegener’s theory that continents slowly moved over Earth’s surface
Seafloor Spreading
Older oceanic crust is pushed away from the mid-ocean ridge as new rock is formed.
Mid-Ocean Ridges
An undersea mountain chain
Deep-Ocean Trenches
A deep valley along the ocean floor where oceanic crust slowly sinks toward the mantle.
Subduction
The process by which oceanic crust sinks beneath
rift vallys
A rift valley is a lowland region that forms where Earth’s tectonic plates move apart, or rift.
Folded Mountains
Folded mountains are created where two or more of Earth’s tectonic plates are pushed together.
Earthquakes
A sudden movement along a boundary of a tectonic plate.
Fault
A break or crack in Earth’s crust.