Rigid layer of Earth's surface below the lithosphere. Flows like toothpaste. Plates of the lithosphere float on it.
What is the asthenosphere?
Subduction Zones
What convergent oceanic- continental formed?
That continents have moved slowly to their current locations. Presence of fossils, rocks, and mountains on different continents help support.
What is Continental Drift Theory?
Mid- Atlantic Ridge, Great Rift Valley in Africa
Where can divergent boundaries be found?
He proposed seafloor spreading the process in which new ocean floor is created at a divergent boundary.
Who is Henry Hess?
San Andreas Fault, California
Where can transform boundaries be found? (HINT: in the USA)
Earth's upper crust and upper mantle broken into sections that are in constant, slow motion driven by movement in the mantle
What is Plate Tectonics?
Convection Currents
What causes plates to move?
Himalayan Mountain Range (Himalayas)
What mountain range is formed by continental-continental boundaries?
Alfred Wegener
What guy was not trusted with his idea of movement of plate tectonics?
new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out
What is seafloor spreading?