Plate Tectonics Flashcards
Crust
The outermost shell of a rocky planet.
Mantale
Layer of molten rock between the crust and core.
Core
Made up of mostly Iron. Separated into the outer core (molten) and inner core (solid)
Tectonic Plate
The layer of rock that makes up the outer part of the earth including the crust and upper mantle lithospheric plates.
Continental drift theory
The theory that continents gradually drifted over time to their present positions.
Asthenosphere
A thin layer of earth about 150 miles thick at the border between the mantle and the crust.
Convection current
The process in wotc the hotter parts of the gas or liquid rise to the top and the cooler denser parts sink.
Convergent boundary
When two tectonic plates come together.
Mountains
Uplift of crustal plates that form elevated landmasses
volcanoes
A vent of fissure in Earth’s surface through witch magma and gases are expelled.
Divergent boundary
When tectonic plates split apart
Transform boundary
When tectonic plates slide past each other.