Terms in this set (20)
a curved line of volcanoes that forms parallel to a plate boundary
The transfer of heat by the movement of a fluid
A supercontinent containing all of Earth's land that existed about 225 million years ago.
The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
The process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary.
Area where the earth's lithospheric plates move in opposite but parallel directions along a fracture (fault) in the lithosphere.
Deep valley in the ocean floor that forms along a subduction zone
A plate boundary where two plates move toward each other.
The soft layer of the mantle on which the lithosphere floats.
A weak spot in the middle of a tectonic plate where magma surfaces; forms a volcano
A plate boundary where two plates move away from each other.
A theory stating that the earth's surface is broken into plates that move.
sea floor spreading
The process by which molten material adds new oceanic crust to the ocean floor
A German scientist who proposed the theroy of continental drift
a chain of extinct volcanoes that is progressively older as one travels away from a hotspot
A plate boundary where two plates move past each other in opposite directions
the single, large ocean that covered Earth's surface during the time the supercontinent Pangaea existed
A rigid layer made up of the uppermost part of the mantle and the crust.
an island consisting of a circular coral reef surrounding a lagoon
An underwater mountain chain where new ocean floor is formed