Earth's Layers and Composition

Crust = The outermost layer of the Earth Inner Core = The solid innermost part of the Earth Outer Core = The liquid layer surrounding the inner core Lower Mantle = The layer below the upper mantle that is solid

Continental Crust = Thicker and less dense than oceanic crust Oceanic Crust = Thinner and more dense than continental crust Upper Mantle = Part of the mantle that is semi-solid and allows for movement Asthenosphere = The region of the upper mantle that behaves like a viscous fluid

Convection Currents = Circulatory movement in the mantle that drives plate tectonics Middle Mantle = Also known as the transition zone between upper and lower mantle Crust = The layer where we live and has the continents and oceans Lower Mantle = Layer responsible for the flow of molten material

<p>Outer Core = Composed mainly of iron and nickel in liquid form Inner Core = Made up of solid iron and nickel Crust = Consists of rocks and minerals forming the land and ocean floors Asthenosphere = A viscous layer of partially melted rock in the upper mantle</p> Signup and view all the answers

<p>Inner Core = Can reach temperatures over 5,000 °C Outer Core = Temperatures ranging from 4,000 to 5,000 °C Lower Mantle = Temperatures around 3,000 °C Upper Mantle = Temperatures generally below 1,000 °C</p> Signup and view all the answers