1 / 15

The Earth’s Layers

The Earth’s Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere, and lithosphere. [6.10A]. Earth’s Layers. Each layer of the Earth has its own unique properties.

tstubblefield
Télécharger la présentation

The Earth’s Layers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Earth’s Layers

  2. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere, and lithosphere. [6.10A]

  3. Earth’s Layers • Each layer of the Earth has its own unique properties. • There are three distinct layers – the crust, mantle, and core – which can then be subdivided into more layers. • Each layer is made up of specific elements.

  4. Simple Layers • Crust • Mantle • Core

  5. Into the Earth…

  6. The Crust • Outermostlayer • Thinnest layer and much coolerthan others • 2 types of crust • Oceanic(very dense, made of basalt) • Continental(less dense, made of granite)

  7. Oceanic and Continental Crust Thinnestbeneath ocean and thickest beneath mountainranges

  8. The Mantle • Layer beneath crust • Middle layer • Very thick layer • Made up of more iron and magnesium so is very dense • Convection currents occur in the mantle

  9. Mantle Is Divided into … • Consists of the crust and the upper part of the mantle • Solid and rocky • Broken into large pieces called tectonic plates • Earthquakes can occur in the lithosphere • Made up of elements Oxygen and Silicon • Beneath the lithosphere • Partially molten • The rock is pliable or plastic-like • Rock here bends, stretches, and flows • The tectonic plates float on this layer Lithosphere Asthenosphere

  10. Tectonic Plates • Earth’s crust is broken into about a dozen major plates and several minor plates • These plates constantly move on top of the Asthenosphere

  11. The Core • Made up of the elements iron and nickel • 1/3 of the Earth’s mass • The core is larger than Mars! • The core is very hot and dense

  12. The Core is Divided Into… • The outer core is a liquid • The material of the outer core is considered molten as it is extremely hot • Less dense than the inner core • Made up of Iron and Nickel • The inner core is the most dense • It is solid even though the temperature is very hot due to the extreme pressure • The inner core is composed mostly of Iron Outer Core Inner Core

  13. Earth’s Layers • How are the Earth’s layers similar to an egg? • Shell=crust • Egg white=mantle • Yolk=core

  14. Physical Structure of the EarthLayers Reviewed • Crust and Lithosphere- rigid outer layer • Mantle and Asthenosphere- solid rock that flows slowly (like hot asphalt) • Outer Core- liquid layer • Inner Core- solid, very dense

  15. References • http://geomaps.wr.usgs.gov/parks/pltec/#crust • http://pubs.usgs.gov/gip/dynamic/dynamic.html

More Related