earth’s interior notes (textbook pg. 167)

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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 towards center 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 rock 83% of earth’s interior! P3) Lithosphere top,cool, rigid part of mantle + crust!

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Page 1: Earth’s Interior Notes (textbook pg. 167)

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!

Page 2: Earth’s Interior Notes (textbook pg. 167)

    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)