Plates Flashcards
Done
Name the layers of the Earth from inner to outer
Core(Inner core, Outer core), Mantle(Lower Mantle, Asthenosphere, Moho), Crust
What is differentiation?
When Earth was still molten, the material sorted by density and when it cooled it formed layers.
Describe the inner core
The inner core is solid due to pressure. It is made of mostly iron and nickel.
Describe the outer core
The outer core is liquid. It is mainly made of iron and nickel.
Describe the moho
The moho is a rigid boundary layer between the rest of the mantle and the crust.
Describe the asthenosphere
The asthenosphere is a solid layer that flows (kind of like putty)
Describe the mantle
The mantle consists of the moho, lower mantle, and asthenosphere. It is made up primarily of Magnesium, Nickel, and Iron.
Describe the crust
The crust is made up of oxygen, silicone, and aluminium. There is a continental crust and oceanic crust.
What is the lithosphere?
The lithosphere is made of the crust and moho
Which layer of the earth is densest?
The inner core
Which layer of the core is the thinnest?
The crust
Which layer of the earth is the thickest?
The mantle.
Who created the continental drift theory?
Alfred Wegner
What is the Continental Drift Theory?
The continents were once connected. This super continent was called Pangaea. The continents moved by plowing across the sea floor.
Provide evidence for the continental drift theory
Continental shelves line up (they fit like a puzzle), climate evidence (coal, glacial deposits), matching rock types/ages of mountains, fossils match