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Earth's Physical Layers - All depths are from the surface of the Earth. 1) The Crust--The outer skin of the planet is composed of igneous, metamorphic, and sedimentary rock. Continental Crust: Comprised predominately of rocks most resembling granite, the continental crust is relatively thick compared to the oceanic crust with a depth that ranges from 30 km to 50 km. The average specific gravity of continental crustal rock is 2.7. Oceanic Crust: At an average depth of 5 km to 10 km, the oceanic crust is thinner than the continental crust. Oceanic crustal rocks are composed mainly of the igneous rocks basalt, diabase, and gabbro, which are mafic in composition. The average specific gravity of oceanic crustal rock is 2.9. Lithosphere: See below. 2) The Mantle--The layer directly below the crust which is delineated from the crust by the Mohorovicic Discontinuity, where seismic waves increase in velocity. The division between the mantle and the crust is a chemical one, the rocks and constituent minerals being higher in magnesium and lower in silicon and aluminum than crustal rocks. The mantle comprises 84% of Earth's volume. Upper Mantle:Lithosphere: The uppermost mantle consists of hard rock and is attached to the crust and comprises the lithosphere. The lithosphere is comprised of tectonic plates which 'float' independently of each other. The lithosphere contains more mantle than crust. Oceanic lithosphere ranges from 50 km to 100 km in thickness, and continental lithosphere ranges from 40 km to 200 km. Asthenosphere: Just below the lithosphere lies the asthenosphere, an area of highly viscous but solid rock. Its viscosity allow it to move slowly over time, which it does as it transfers heat to the lithosphere via convection currents. These convection currents are responsible for the movement of Earth's tectonic plates. The depth of the asthenosphere averages somewhere between 100 km and 200km with depths up to 410 km. Transition Zone: The depth of the transition zone is between 410 km and 660 km. The rock here is mostly peridotite, a coarse grained igneous rock, kept from melting by extremely high lithostatic pressures. Temperatures in the transition zone range from 1400 degrees C to 1600 degrees C. The Lower Mantle: The depth of the lower mantle ranges from 670 km to 2798 km. Little is known about the lower mantle other than that seismic waves indicate it is fairly homogenous in lithology. D'': The D'' area of the mantle extends from 2798 km to 2900 km, which is the boundary between the mantle and the liquid outer core. At this level, the pressures are enormous, roughly equal to 1.4 million units of atmospheric pressure, and temperatures are over 4,000 degrees C. 3) The Outer Core: The outer core lies at a depth from 2900 km to 5150 km. It's composed of liquid iron and nickel along with small amounts of lighter elements, with temperatures ranging from 4,000 degrees C to 6,100 degrees C near the boundary with the inner core. 4) The Inner Core: From the boundary with the outer core to the center of the Earth, a distance of about 1220 km is the solid sphere of the inner core, a ball of incredibly hot iron-nickel alloy. Temperatures here reach between 5,000 and 7,000 degrees C, and pressures are calculated to be around 3,000,000 units of atmospheric pressure. Despite the high temperature, at these pressures the metals cannot remain molten.
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Compare the layers of earth to the layers of a egg?
theshell is your crust the core is th yolk the mantle is the white stuff
The relative thickness of the Earths crust is similar to the relative thickness of the?
The relative thickness of the Earth's crust is similar to the relative thickness of an apple's skin compared to the apple itself. Both the Earth's crust and an apple's skin are thin outer layers in relation to the entire object.
How will you compare the inner structure of the earth with that of the sliced egg or fruit?
The STRUCTURE OF THE EARTH can be compared to a BOILED EGG and an AVOCADOThe CRUST in the EARTH'S SURFACE is compared to the SKIN of the AVOCADO and the Shell of the BOILED EGGThe MANTLE in the EARTH is compared to the FLESH of the AVOCADO and the EGG WHITEThe CORE in the EARTH is compared to the SEED of the AVOCADO and the EGG YOLK...
Why is an egg a good model for the earth's interior?
An egg's structure closely resembles the layers of the Earth's interior, with a hard outer shell representing the Earth's crust, a thick egg white symbolizing the mantle, and a solid yolk imitating the core. This model can help illustrate concepts such as different layers, densities, and temperatures within the Earth.
Why is the earth's crust like an egg?
The earth's crust is like an egg because the eath has a mantle (sort of like a shell) and an egg has a shell as well. Try this get a cup get an egg pour vineger and or salt in to the cup then drop the egg in the cup. Wait 2 or 3 days and after those 3 days the egg will feel soft.
How does the yolk of an egg compare to the earth?
has different layers
Compare the layers of a hard boiled egg to the three layers of the Earth?
The three chemical layers of the Earth compare to the layers of a hard boiled egg as follows: the shell equals the crust, the egg white equates to the mantle, and the yolk represents the core.
Compare the layers of earth to the layers of a egg?
theshell is your crust the core is th yolk the mantle is the white stuff
How do the thickness of the layer of the egg compare to the layer of the earth?
the egg's shell is not that thick like the crust, the egg white is the thickest like the mantle and the yolk is thick like the core
The relative thickness of the Earths crust is similar to the relative thickness of the?
The relative thickness of the Earth's crust is similar to the relative thickness of an apple's skin compared to the apple itself. Both the Earth's crust and an apple's skin are thin outer layers in relation to the entire object.
Would be the best model of the earths layers?
The egg is like a model of the layers of the Earth. (see layers of the ... The egg shell will represent the thin outer layer of the Earth called the crust.
Why is egg compared to the layers of the earth?
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How will you compare the inner structure of the earth with that of the sliced egg or fruit?
The STRUCTURE OF THE EARTH can be compared to a BOILED EGG and an AVOCADOThe CRUST in the EARTH'S SURFACE is compared to the SKIN of the AVOCADO and the Shell of the BOILED EGGThe MANTLE in the EARTH is compared to the FLESH of the AVOCADO and the EGG WHITEThe CORE in the EARTH is compared to the SEED of the AVOCADO and the EGG YOLK...
How is the earth like an egg?
Just as an egg has primarily 3 layers, the yolk, the white, and the shell, so does the Earth, which has a core, a mantle, and a crust (although the core is often described as having an inner and an outer section). It is not true, however, that someday the planet Earth will hatch into a giant space chicken. Don't believe those rumors.
Why is an egg a good model for the earth's interior?
An egg's structure closely resembles the layers of the Earth's interior, with a hard outer shell representing the Earth's crust, a thick egg white symbolizing the mantle, and a solid yolk imitating the core. This model can help illustrate concepts such as different layers, densities, and temperatures within the Earth.
How do the thicknesses of the layer of the egg compared to the layers of the earth?
the egg's shell is not that thick like the crust, the egg white is the thickest like the mantle and the yolk is thick like the core
Are ember tetra live bearers or egg layers?
All "Tetras" are egg layers.
