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Download Earth*s Layers - Ms. Gravette and the Mad Scientists
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Write on the RIGHT Side How do we define Earth’s layers? By Compositional “Chemical” makeup (made up of different mixtures of chemicals) By Physical Properties “Physical” makeup (such as whether its solid or liquid, and how it moves) 1. Lithosphere 2. Asthenosphere 2. Mantle 3. Mesosphere 3. Core 4. Outer Core 5. Inner Core 1. Crust Crust The outer most solid layer The 2 least dense layer Types: Continental Crust 2. Oceanic Crust 1. Mantle Located between the core and the crust The region of hot, slowflowing, solid rock Is denser than the crust When convection takes place here, cooler rock sinks and warmer rock rises Core Below the mantle Is the densest layer, makes up 1/3 of the Earth’s mass Made up of mostly iron and some nickel Lithosphere The outermost, rigid layer Made up of two parts: 1. The crust 2. The rigid upper part of the mantle Divided into pieces called Tectonic Plates Asthenosphere A layer of soft/semilquid mantle that is made of rock that flows slowly Is responsible for the movement of Tectonic Plates Mesosphere The strong, lower part of the mantle Rock flows more slowly than in the asthenosphere Outer Core The liquid layer of Earth’s core Lies beneath the mantle and surrounds the inner core Is responsible for the Earth’s magnetic field Inner Core Solid, dense center of the Earth Made up of mostly iron The hottest part of the Earth Is about 1250km thick Why does the Earth have layers? Layers exist because of Density Density= mass/Volume More dense layers settled toward the center of the Earth. Less dense layers settled towards the top
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