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Tuesday 5/17/11
The Earth has Layers
Date Activity Page
5/17 Earth Has Layers 3 Song
5/17 Layers of Earth Assign.
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Content Objective
1. We will identify several layers of Earth and learn a few characteristics of each.
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Language Objectives
1. We will learn about Earth’s layers through a slide show, a song and a reading assignment.
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Earth’s Layers
Three main layers make Earth’s interior: the crust, the mantle, and core. Each layer has its own conditions and materials.
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Three main layers make Earth’s interior: the crust, the mantle, and core. Each layer has its own conditions and materials.
The CrustUnder the Continents-Continental
Under the Ocean-Oceanic
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Oceanic Crust
Three main layers make Earth’s interior: the crust, the mantle, and core. Each layer has its own conditions and materials.
Made of basalt-heavy dense rock
It is the crust under the oceans
5 km (3 mi) to 10 km (6 mi) thick
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Three main layers make Earth’s interior: the crust, the mantle, and core. Each layer has its own conditions and materials.
Continental CrustGranite is lighter and less dense
Granite continents sit on top of basaltic crust
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Three main layers make Earth’s interior: the crust, the mantle, and core. Each layer has its own conditions and materials.
Mantle
5-40 kilometers below the surface
Asthenosphere is the “soft” layer under the lithosphere
Lithosphere is crust + uppermost mantle
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Three main layers make Earth’s interior: the crust, the mantle, and core. Each layer has its own conditions and materials.
CoreInner CoreOuter Core
Solid only because of
intense pressure
Liquid, rotating around solid inner core
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Three main layers make Earth’s interior: the crust, the mantle, and core. Each layer has its own conditions and materials.