when lim f(x) exists it always equals f(a)
When Lim F(x) Exists It Always Equals F(a)? The limit (...
As we delve into Earth’s depths, temperatures and pressures rise quickly. At a depth of only 50 kilometers (about 30 miles), temperatures are already near 1000 deg. F (500 deg. C) and pressures are near 200,000 psi (pounds per square inch).Sep 29, 2010
Pressures in the lower mantle start at 237,000 times atmospheric pressure (24 gigapascals) and reach 1.3 million times atmospheric pressure (136 gigapascals) at the core-mantle boundary.
The pressure at the bottom of the mantle is ~136 GPa (1.4 million atm). Pressure increases as depth increases, since the material beneath has to support the weight of all the material above it.
about 2.7 grams per cubic cm
Continental crust is broadly granitic in composition and, with a density of about 2.7 grams per cubic cm, is somewhat lighter than oceanic crust, which is basaltic (i.e., richer in iron and magnesium than granite) in composition and has a density of about 2.9 to 3 grams per cubic cm.
At about 50 kilometers (30 miles) below the Earth’s surface, density measurements reach 200,000 pounds per square inch (13,790 bars). Due to the pressure from the above crust and mantle, lithospheric density generally increases as both age of the surrounding rock and depth increase.
The layer of the atmosphere with the most air pressure in it is the troposphere. It is here that also most weather occurs. Air pressure decreases upwards.. In higher elevations, the atmosphere has lower pressure.
The outer core is at 4000–5000 K and pressure of 135–330 GPa (from 1.3 to 3.3 million atmospheres). While the field resembles that of a bar magnet, the core is too hot to be magnetized in this way.
Crust. … Tarbuck, Earth’s crust is made up of several elements: oxygen, 46.6 percent by weight; silicon, 27.7 percent; aluminum, 8.1 percent; iron, 5 percent; calcium, 3.6 percent; sodium, 2.8 percent, potassium, 2.6 percent, and magnesium, 2.1 percent.
The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense metal core.
3 grams per cubic centimeter
(Basalts are a sima rocks.) Oceanic crust is dense, almost 3 grams per cubic centimeter (1.7 ounces per cubic inch).
Structure of the Earth
|Thickness (km)||Density (g/cm3)|
Oceanic crust is more dense because it contains basalt which is more dense than granite which composes the continental crust.
approximately 330 gigapascals
The lowest layer, the troposphere, starts at sea level and reaches a height of 10 km (7 miles). 90% of all the molecules in the Earth’s atmosphere are found here. … The greatest amount of air pressure is in this layer because most of the air molecules are in this area.
Inner Core. The inner core is the deepest layer on Earth. It is also made up of iron and nickel but the pressure is so high that it is no longer liquid.
The pressure in the Earth’s inner core is slightly higher than it is at the boundary between the outer and inner cores: It ranges from about 330 to 360 gigapascals (3,300,000 to 3,600,000 atm).
Extrapolating from that measurement, scientists estimated the boundary between Earth’s inner and outer core is a searing 10,832 F, give or take about 930 degrees, at a pressure of 3.3 million atmospheres (or 3.3 million times the atmospheric pressure at sea level).
The average magnetic field strength in the Earth’s outer core is estimated to be 2.5 millitesla, 50 times stronger than the magnetic field at the surface. The outer core is not under enough pressure to be solid, so it is liquid even though it has a composition similar to the inner core.
Answer: The crust of earth is a very thin layer, more like the skin of an apple. … Being thin, the crust breaks into pieces which are known as plates, which keep moving on the mantle without being broken.
The average age of the current Earth’s continental crust has been estimated to be about 2.0 billion years. Most crustal rocks formed before 2.5 billion years ago are located in cratons.
The earth is made up of three different layers: the crust, the mantle and the core. This is the outside layer of the earth and is made of solid rock, mostly basalt and granite. There are two types of crust; oceanic and continental. Oceanic crust is denser and thinner and mainly composed of basalt.
Interesting Facts about the Earths Crust
It is thinner than continental crust, or sial, generally less than 10 kilometers thick; however, it is denser, having a mean density of about 3.0 grams per cubic centimeter as opposed to continental crust which has a density of about 2.7 grams per cubic centimeter.
what is the pressure of the crust in atmosphere
what is the pressure of the mantle
what is the pressure of the lithosphere
pressure of the oceanic crust
pressure of the earth’s layers