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Earth´s layers

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Jaime Pena
Jaime Pena

Earth is composed of both compositional and physical layers. The compositional layers are the crust, mantle, and core. The crust is on the outermost layer and contains the continents and ocean floor. Below is the mantle, made of soft, wax-like rock. The innermost layer is the core, made of iron and nickel. The physical layers are defined by their properties and include the solid lithosphere, soft asthenosphere, softer mesosphere, liquid outer core, and solid inner core.

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Mr. Jaime Peña EARTH´S LAYERS
Planet Earth…2012 Earth is our planet, our home. Have you ever wonder what lies beneath your feet? Well, let´s take a fantastic look at it!
Compositional Layers To study the layers of Earth, scientists make 2 classifications of them. Compositional and Physical Layers. They are related to each other. In this picture we can see the Compositional layers. They include: The Crust, the Mantle, and the Core.
Compositional Layers Crust: It is the layer we live on. It includes all the continents and even the ocean floor! The crust is made up of 3 elements: oxygen, silicate and aluminum. Mantle: It is the middle of Earth´s compositional layers. Some of the rock in the mantle is like wax that is soft but not completely melted. Core: Innermost part of Earth. Made up mostly of 2 elements: iron and nickel which are metals.
Physical Layers There are 5 Physical Layers. They are determined by their physical properties, such as if a layer is hard or soft, solid or liquid. The Lithosphere is the uppermost layer of Earth. It is almost all solid. It is directly related to the Crust and a little part of the Mantle. It is divided into pieces called Tectonic Plates.
Physical Layers Next come the Asthenosphere and the Mesosphere. Both are related to the Mantle. The tectonic plates float on the Asthenosphere, which is soft. Rock in the Mesosphere is softer than rock in the Asthenosphere.
Physical Layers The innermost physical layers are the Outer Core and the Inner Core. In this picture, they are represented by the red and the yellow part. Both are related to the Core. They are divided because the Outer Core is liquid and the Inner Core is solid. They are made mostly of iron and nickel. The reason why the Inner Core is a solid ball of iron is because of the pressure of all the other layers over it. But that doesnt mean is cold. Some scientist compare its heat to the temperature at the Sun´s surface!
Compositional and Physical Layers Compositional Physical Layers Layers Crust Lithosphere Asthenosphere Mantle Mesosphere Outer Core Core Inner Core

More Related Content

Earth´s layers

  • 2. Planet Earth…2012 Earth is our planet, our home. Have you ever wonder what lies beneath your feet? Well, let´s take a fantastic look at it!
  • 3. Compositional Layers To study the layers of Earth, scientists make 2 classifications of them. Compositional and Physical Layers. They are related to each other. In this picture we can see the Compositional layers. They include: The Crust, the Mantle, and the Core.
  • 4. Compositional Layers Crust: It is the layer we live on. It includes all the continents and even the ocean floor! The crust is made up of 3 elements: oxygen, silicate and aluminum. Mantle: It is the middle of Earth´s compositional layers. Some of the rock in the mantle is like wax that is soft but not completely melted. Core: Innermost part of Earth. Made up mostly of 2 elements: iron and nickel which are metals.
  • 5. Physical Layers There are 5 Physical Layers. They are determined by their physical properties, such as if a layer is hard or soft, solid or liquid. The Lithosphere is the uppermost layer of Earth. It is almost all solid. It is directly related to the Crust and a little part of the Mantle. It is divided into pieces called Tectonic Plates.
  • 6. Physical Layers Next come the Asthenosphere and the Mesosphere. Both are related to the Mantle. The tectonic plates float on the Asthenosphere, which is soft. Rock in the Mesosphere is softer than rock in the Asthenosphere.
  • 7. Physical Layers The innermost physical layers are the Outer Core and the Inner Core. In this picture, they are represented by the red and the yellow part. Both are related to the Core. They are divided because the Outer Core is liquid and the Inner Core is solid. They are made mostly of iron and nickel. The reason why the Inner Core is a solid ball of iron is because of the pressure of all the other layers over it. But that doesnt mean is cold. Some scientist compare its heat to the temperature at the Sun´s surface!
  • 8. Compositional and Physical Layers Compositional Physical Layers Layers Crust Lithosphere Asthenosphere Mantle Mesosphere Outer Core Core Inner Core