The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including...
Transcript of The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including...
![Page 1: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/1.jpg)
The The Earth’sEarth’s LayersLayers
![Page 2: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/2.jpg)
Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere, and lithosphere. [6.10A]
![Page 3: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/3.jpg)
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.
![Page 4: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/4.jpg)
Simple Layers
• Crust
• Mantle
• Core
![Page 5: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/5.jpg)
Into the Earth…
![Page 6: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/6.jpg)
The Crust• Outermost layer• Thinnest layer and
much cooler than others
• 2 types of crust
1. Oceanic (very dense, made of basalt)
2. Continental (less dense, made of granite)
![Page 7: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/7.jpg)
Oceanic and Continental Crust
Thinnest beneath ocean and thickest beneath mountain ranges
![Page 8: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/8.jpg)
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
![Page 9: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/9.jpg)
Mantle Is Divided into …
Lithosphere• 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
Asthenosphere
![Page 10: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/10.jpg)
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
![Page 11: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/11.jpg)
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
![Page 12: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/12.jpg)
The Core is Divided Into…
Outer Core• 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
Inner Core• 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
![Page 13: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/13.jpg)
Earth’s Layers
• How are the Earth’s layers similar to an egg?
• Shell=crust• Egg white=mantle• Yolk=core
![Page 14: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/14.jpg)
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
![Page 15: The Earth’s Layers Layers. Students will … illustrate the structural layers of Earth, including the inner core, outer core, mantle, crust, asthenosphere,](https://reader036.fdocuments.in/reader036/viewer/2022062304/56649cb85503460f9497e258/html5/thumbnails/15.jpg)
References
• http://geomaps.wr.usgs.gov/parks/pltec/#crust
• http://pubs.usgs.gov/gip/dynamic/dynamic.html