Inner core
A ball of hot metals at earths center.
Outer core
The layer of liquid metals that surrounds the inner core.
Mantle
The Earth's thickest layer measuring nearly 2900 kilometers.
Crust
The thin layer of rock that surround the Earth.
Lithospere
The Earth's crust and the very top of the mantle combined.
Asthenosphere
The layer of hotter softer rock in the upper mantle.
Tectonic Plates
The large and small slabs of rock that make up pieces of the lithospere.
Continental Drift
The hypothesis that proposed that Earth's continents were once joined in a single landmass and then gradually moved apart.
Pangaea
I'm the name that Alfred Wegener gave to huge supercontinent that he propsed had once existed.
Mid-Ocean Ridge
The huge underwater mountain ranges that are present in every ocean and circle Earth.
Convection
The transfer of heat within a material.
Convection Current
The motion created when heated material rises,cools and sinks.
Theory of Plate Tectonics
State that the Earth's lithosphere is broken into huge moving slabs of rock driven by motions.
Divergent Boundary
Occurs when Tectonic Plates move apart.
Magnetic Reversal
The switch in direction of Earth's magnetic North and South poles.
Hot Spot
The area of volcanic activity that develops above rising plumes of Magma
Convergent Boundary
The place where older crust is destroyed because two plates converge,or push together.
Subduction
One plate sinks beneath another.
Continental-Continental collision
Occurs when plates with continental crust push together.
Oceanic-Oceanic Subduction
A plate with oceanic crust sinking under another plate with oceanic crust.
Rift Valley
The gap that form as Tectonic Plates move apart.
Oceanic-Continental Subduction
A plate with oceanic crust sinking under a plate with continental crust.
Transorm Boundary
Occurs when two plates move past each other in opposite directions.