Flashcards in Chapter 1 formation of the earth Deck (6)
Planets form as rocks clump together (this is the Accretion Theory)
the creation of layers in the Earth due to the upward migration of lighter elements and the sinking of heavier elements.
the innermost layer of the Earth, composed of iron and nickel. The inner core is solid while the outer core is liquid and is where the magnetic field is created due to the motion of these metallic fluids.
sits on the core and makes up the largest volume of material. It is often subdivided into an upper and lower mantle based on the composition and properties of the mantle material.
the outermost layer of the Earth. The upper crustal material is primarily composed of lighter silicate material (like granite) or basalt.