Published on November 6, 2013
Inside the Earth Victoria Saura Montesinos The interior structure of the Earth is layered in spherical shells, like an onion.
Its structure is divided in: Mohorovičić discontinuity Gutenberg discontinuity) Lehmann discontinuity
(Rigid) (Rigid) These layers can be defined by either their chemical or their rheological properties. Earth has a solid crust, a highly viscous mantle, a liquid outer core and a solid inner core. (Plastic) (Rigid) Lithosphere astenosphere
•The crust it’s the outermost layer. •The thin parts are the oceanic crust, which underlie the ocean basins (5–10 km). •The thicker crust is continental crust, which is less dense. •The uppermost mantle together with the crust constitutes the lithosphere.
Convection currents are produced by differences in temperature and density, so that the hotter material weigh less and rise and cooler material, are thicker and heavier and descends. The mantle is the thickest layer of Earth. It’s composed of silicate rocks that are rich in iron and magnesium. ·The origin of plate movement occurs by some material currents in the mantle, the socalled convection currents, and especially, in the force of gravity.
•There aren’t denser materials than the Earth's core. •Seismic measurements show that the core is divided into two parts, a “solid” inner core and a “liquid” outer core.
Plates The asthenosphere is the part of the mantle that flows and moves the plates of the Earth. •The lithosphere is broken into many pieces called plates. •The plates "float" on the soft, plastic mantle which is located below the crust. •These plates usually move along smoothly but sometimes they stick and build up pressure. •The pressure builds and the rock bends until it snaps. •When this occurs an earthquake is the result.
Watch BBC video clips full of interesting facts about the layers inside the Earth that feature popular presenters such as Professor Iain Stewart and...
Inside the Earth The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of ...
Echo-sounding techniques are used to explore the Earth's crust. Images, similar to sonograms, are produced. A sonogram in the crust is called a seismic ...
This topic explains the inner layers of the earth's crust and how the earth looks like on both the inside and the outside. This is a product of ...
Inside the Earth Printout: Label the Inside of the Earth The Earth is made of many different and distinct layers. The deeper layers are composed of heavier ...
Inside the Earth - Duration: 5:06. by Iken Edu 309,299 views. 5:06 (HD) What if the Earth STOPS Spinning- (Full Documentary) ...
Inside the Earth The size of the Earth -- about 12,750 kilometers (km) in diameter-was known by the ancient Greeks, but it was not until the turn of the ...
The Hollow Earth hypothesis proposes that the planet Earth either is entirely hollow or otherwise contains a substantial interior space. The scientific ...
A team of Harvard scientists believe the remnants of an ancient Earth, dating to the time another planet collided with ours to produce the moon, may still ...
Great documentary, very informative and entertaining. What i do not understand is how nuclear fusion does not occur at the center of the earth.