inside the earth earth has three main layers ◦ crust ◦ mantle ◦ core based on the compounds...

Inside the Earth Earth has three main layers ◦ Crust ◦ Mantle ◦ Core Based on the compounds that make up each layer The more dense (heavy) the compound the deeper it is found in the Earth

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Inside the EarthEarth has three main layers

◦Crust◦Mantle◦Core

Based on the compounds that make up each layer

The more dense (heavy) the compound the deeper it is found in the Earth

Crust5 to 100 km thickThinnest layer of the EarthTwo types – Continental and

Oceanic Crust◦Oceanic Crust is more dense than

Continental Crust so it sits lower (ocean floor)

MantleBetween Crust and Core2,900 km thickMantle is more dense than the

crust

CoreThe center of the EarthRadius of 3,430 kmThe most dense layer of the

Earth

Physical Layers of EarthLithosphere

◦Made from the crust and the upper part of mantle

◦Divided into pieces called tectonic plates

◦15 – 300 km thick

Page 6: Inside the Earth Earth has three main layers ◦ Crust ◦ Mantle ◦ Core Based on the compounds that make up each layer The more dense (heavy) the compound

AsthenosphereLayer below the LithosphereMade of solid rock that flows very

slowlyThe Lithosphere moves over the

top of this layer250 km thick

Page 7: Inside the Earth Earth has three main layers ◦ Crust ◦ Mantle ◦ Core Based on the compounds that make up each layer The more dense (heavy) the compound

MesosphereThe lowest layer of the Mantle2,550 km thick

Page 8: Inside the Earth Earth has three main layers ◦ Crust ◦ Mantle ◦ Core Based on the compounds that make up each layer The more dense (heavy) the compound

CoreOuter Core

◦Liquid layer that lies beneath the Mantle

◦Surrounds Inner Core◦2,200 km thick

Inner Core◦Solid, dense center of the planet◦1,230 km thick

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