earth’s interior notes (textbook pg. 167)
TRANSCRIPT
Earth’s Interior Notes (textbook pg. 167)
Main Idea Details
P1), Earth is Cooling losing heat over time
outer layer (crust) is coolest
temperature & pressure increase as move in towardscenter of earth
P2) Crust Two types of crust:oceanic: 510 km (36 mi) of rock under oceans
continental: 1570 km (1243 mi) of rock under land
P3) Mantle 2900 km (of dense rock83% of earth’s interior!
P3) Lithosphere top,cool, rigid part of mantle + crust!
Lithosphere (cont.) cracked & broken into plates
P4) Asthenosphere lower, hotter, “plasticlike” part of mantle
plates of lithosphere “float” on the asthenosphere
P5) Core Two parts:liquid Outer Core (made of iron)solid Inner Core (made of iron and nickel)