Asthenosphere

that those minerals in the inner core are solid and the same minerals in the outer core are liquid. The subsequent layer is the mantle which is sitting on top of the outer core. This layer is by far the thickest layer of Earth. Similar the core, the mantle contains mostly iron but in the form of silicate rocks. The mantle can also be divided into two portions, the upper mantle and the lower mantle. The lower mantle is completely solid since the pressure is too excessive for it to melt and flow. The upper mantle is also known as the asthenosphere, which flows as convection currents. Convection occurs in all fluids and is the rising of warm particles and sinking of cool particles. This convection flow of the asthenosphere has a large impact on Earth 's lithosphere, the outermost layer of the planet. The lithosphere contains both the crust and a small portion of the upper mantle. The lithosphere is very rigid; it does not flow like the asthenosphere. The crust itself, which is contained in the lithosphere, can also be divided into two parts, the continental crust, and the oceanic crust. The continental crust is composed mostly of granite unlike the oceanic crust which consists of a volcanic lava rock called basalt. Basaltic rocks of the ocean plates are much denser and heavier than the granitic rock of the continental plates. Lying above the lithosphere is the liquid hydrosphere, containing 71% of the Earth 's surface. Finally, the Earth 's atmosphere is a thin layer of gases…

Plate tectonics is a theory in which was proposed about a hundred years ago. This theory states that our Earths lithosphere is divided up into several different plates. Scientists have found that during the past millions of years, these plates move and have caused many phenomenon’s. There are three types of plate boundaries identified today: divergent, convergent, and transform. One of the most acknowledged discoveries made was the Isthmus of Panama. An isthmus is simply a thin strip of…

The Alaskan way Viaduct will collapse if an earthquake happens, but that earthquake will take many steps. These steps will got through the layers of the earth. The layers are stacked on top of eachother, like the liquids in the “Density Column lab”. The layers are inner core, outer core, mesosphere, asthenosphere, and lithosphere(upper rigid mantle, continental crust, and oceanic crust). The earth's compositional layers are inner core, outer core, mantle, and crust. The inner core radiates…

The Inner Core, Outer Core, Mantle, Asthenosphere, and Lithosphere, or, as more colloquially known, the five layers of the Earth. Although each layer is important, each living thing resides on the Lithosphere, which happens to rest on the Asthenosphere, the upper part of the Mantle. Forces caused by these two layers both contribute to the theory of Plate Tectonics, which happens to be interconnected to Earthquakes and Volcanoes. Without Plate Tectonics, the other two occurrences simply cannot…

5. Define lithosphere and asthenosphere. Lithosphere is the solid outermost part of the planet where we live on. It consists of the brittle upper portion of the mantle and as well as the crust. There are two different types of lithosphere which are oceanic lithosphere and continental lithosphere. The continental lithosphere is made up of igneous and sedimentary rock. It is 7-10 kilometres thick and makes up 40 percent of the Earth’s surface. The oceanic lithosphere is made up of mafic and…

The topic of this discussion is to explain why Africa and South America are moving apart. The drifting apart of Africa and South America has to do with the theory known as the theory of plate tectonics. Based on this model, the crust the coolest part of the mantle, make up Earth’s strong outer layer, known as the lithosphere. Right beneath the lithosphere is the asthenosphere, the hottest part of the mantle. Rocks at this depth are very near the melting temperature, and respond to forces by…

approximation. Also ridges usually contribute to two plates at the same rate, then sometimes a means of separation rate (v/2) is given instead of the current separation rate (v). 10. According to the theory of plate tectonics, the Earth's crust consists of at least a dozen of rigid plates that move at your own pace. These blocks resting on a layer of warm and flexible, rock called the asthenosphere, which flows slowly by way of hot tar. Geologists still have not determined exactly how these two…

Algebra 2 In my life I had a lot of memories good ones and bad ones.The best memory I can come up with is when I was little and every summer my family went to Mississippi. We would go swimming, and family members houses and just see a lot and eat a lot. One of the years we had went I almost drowned by jumping into the middle of the pool at our hotel and not knowing how to swim. But what made the best memory was just seeing my whole family together and that I just like being down south, for the…

Instruct the students that convection currents in the asthenosphere travel to the surface of the Earth, where it breaks apart the plates at “spreading centers”, and as the plates separate the constantly streaming magma cools when it reaches the surface creating new ocean floor. Stress the fact that due in a large part to the volcanic activity, the new ocean floor moves away from the crests on both sides of the boundary. Further explain that when two tectonic plates are moving away from each…

Geologically, we can divide the outer core of the earth into two parts which are lithosphere and asthenosphere. Lithospheric shell contains a number of major breaks which can be referred as plate boundaries. Lithosphere sits on Asthenosphere, which is the portion of the mantle, causing the plates to move around as its solid and ductile properties. When we think about the movements of plate tectonics, we generally come up with the idea of dramatic natural disasters which destroy and derive…