Earth's Interior - Animated Presentation on the layers of the Earth!

The inner core is a solid section of the Earth and is unattached to the mantle, being suspended by the molten outer core. This solidified state is the result of a very intense pressure-freezing process that occurs in most liquids when temperature decreases or pressure increases. The outer core of Earth is a scorching hot, electrically conductive liquid in which convection takes place. This inner layer in mutual combination with the rotational motion of the Earth creates a dynamo effect where a force ield of electrical currents is generated. This field is also known as Earth's magnetic field, which is responsible for the functioning of mechanical and biological compasses. This field also causes a subtle jerking motion in the Earth's daily rotation. In terms of the physical aspects of the outer core, the layer is dense, but not as dense as pure molten iron, evidencing the presence of multiple impurities having a lighter chemical makeup. According to scientists, about 10% of this layer is composed of sulfur and/or oxygen due to the fact that these two elements are abundant in the cosmos and dissolve readily in molten iron.The outer core is in the range of 200 to 300 kilometers (125 to 188 miles) thick and represents about 4% of the mantle-crust mass. This layer is sometimes identified as part of the lower mantle due to its geographical nature. However, studies on seismic discontinuities suggest that this "D" layer might differ chemically rom the lower mantle lying above it. Looking at the lower mantle, its chemical omposition includes silicon, magnesium, and oxygen. Most likely, it probably also contains some iron, calcium, and aluminum. This layer is comprised of 72.9% of the antle-crust mass, making the Earth abundant in the chemical elements of silicon, magnesium and oxygen, the layer's primary components. 3. Higher up, we encounter the upper mantle. Through excavations in volcanoes, scientists have found that this part of the crust composes of 15.3% of the total mantle-crust mass and is made of crystalline forms of Olivine (Mg,Fe)2SiO4 and pyroxene (Mg,Fe)SiO3. The upper mantle makes up 10.3% of the Earth's mass, extending a depth of 6-250 miles (10-400 kilometers). A relatively large portion when compared to the other interior layers. This layer is not completely made of solid minerals for scientists speculate that the asthenosphere could be partly liquid molten.Continental crust: The second smallest area of the Earth is the Continental crust, making up only 0.374% of the Earth's mass and extending a short depth of 0 - 31 miles (0-50 kilometers). Looking at the percent by composition, the continental crust makes up only 0.554% of the mantle-crust mass. The layer is composed primarily of crystalline rocks made of low-density buoyant minerals dominated mostly by quartz (SiO2) and feldspars (metal-poor silicates). This is the outer part of the Earth composed essentially of crystalline rocks. The continental crust and the oceanic crust are also referred to as the lithosphere because of the cool and rocky conditions that exist in its chemical composition.

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Film & Animation

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• Earth's
• Interior
• Animated
• Presentation
• on
• the
• layers
• of
• Earth!
• animation
• inner
• core
• outer
• mantle
• curst
• ocean
• earth
• plan
• mass
• length
• space
• lithosphere
• iron
• gravity
• rotation