What is the mass of Earth's crust?
Mass of crust = 19.1 zetagrams (1.913x1022 kg).
It is not possible to give an exact answer to this question as the Earth's crust varies in thickness and in density. However it is possible to make an estimate, although this will contain errors due to the simplifying assumptions it will be necessary to make.
Earth's crust varies in thickness from as little as 2km thick to over 70 km thick with an average value of approximately 35 km for the continental crust and 4.5 km for the oceanic crust.
Approximately 70 % of Earth's surface is covered in ocean and so it is assumed that this is the proportion of the crust formed of the denser, but thinner oceanic crustal rocks whereas the remaining 30 % is assumed to be composed of the thicker but less dense continental crustal rocks.
Density: It is assumed that the continental crust has an average density of 2700 kg/m3 and the oceanic crust a density of 3000 kg/m3.
Diameter of Earth = 6360 km.
As such, based on the above assumptions an estimation of the mass of the crust can be made by:
Calculating the volume of crustal material:
Volume of Earth = 4/3 x Pi x (6360 x 1000)3
Volume of Earth = 1.07761x1021 m3
Volume of Earth excluding oceanic crust:
Volume = 4/3 x Pi x (6356 x 1000)3
Volume of Earth excluding oceanic crust = 1.07532x1021 m3
Volume of Earth excluding continental crust:
Volume = 4/3 x Pi x (6325 x 1000)3
Volume of Earth excluding continental crust = 1.05991x1021 m3
As such the average volume of continental crust equals:
Volume = (1.07761x1021 - 1.05991x1021)
Volume = 1.76929x1019 m3
As such the average volume of oceanic crust equals:
Volume = (1.07761x1021 - 1.07532x1021)
Volume = 2.28575x1018 m3
Mass = Density x Volume:
Mass of oceanic crust = 2.28575x1018 x 3000 x 0.7
Mass of oceanic crust = 4.8x1021 Kg
Mass of continental crust = 1.76929x1019 x 2700 x 0.3
Mass of continental crust = 1.433x1022 Kg
Sum of masses of continental and oceanic crust :
Mass of crust = 1.913x1022 kg.
The crust takes up 1% of earths mass
No. The crust contains a small fraction of earth's mass. Most of the mass is contained in the mantle.
By mass Oxygen
mass of Earth = 5.97219 Ã— 1024 kilograms. Roughly. The mass of the earth is not represented by the earths crust
The Earths crust.
With a very sizable iron core and a (by comparison) wafer-thin crust, I doubt that the earth's crust even approximates a full percentage point.
Oxygen and silicon
Under 1 percent
The crust is about 40 kilometers thick in many places. The crust is the coldest layer of all the layers of earth. The crust makes up less than 1% of the earths mass. The crust is mainly made up of silicon,aluminum,calcium,sodium, and potassium.
Isostacy refers to an equilibrium level maintained by the earths crust on top of the mantle. The theory holds that the weight of the earths crust will displace a certain amount of the underlying mantle, and that an equilibrium is reached whereby the mass of the displaced crust and the mass of the displaced mantle are equal, thus holding that part of the crust at a certain height.
The earths crust is 7km thick
Silicon is a mixture of the minerals of the earths crust. so.... silicon isn't something from the earths crust. -thanks for your question.
The earths crust is a part of the outermost layer.
The Earthâ??s crust is the part of the planet that we live on. It is a thin rocky layer that only makes up about 1 percent of the entire mass of Earth.
thinner and denser
The Earths crust is approximately 650 km deep.
The Earths crust is 870 degrees celsius
there is some crust on earths and is called crust
a sudden movement in earths crust is an earthquake
No. While events on the earths crust can cause global warming, the crust itself does not.
The percentage of calcium in earths crust is 3.6%.
The Earth's crust is 40 kilometers thick. The Earth's crust is the coldest layer out of all the other layers of the Earth. The Earth's crust is less than 1% of the Earth's mass. The Earth's crust is made up of aluminum, calcium, potassium, silicon, and sodium.
silicon percent abundance in earths crust poops
The abundance of neodymium in the earths crust is approx. 40 ppm.
Yes all metals are in the earths crust in ore form.
Yes, Compression can thicken the earths crust and tension can cause thinning in the earths crust.
magma is under the earths crust lava is above (on) earths crust
Go outside onto the grassy ground. Then look down. There you go, the earths Crust front row seats. The earths crust is the farthest outer layer of the earth.
Silicates makes up a huge percent of the earths crust. They are the predominant minerals contained in the crust.
The heat transfer is moved to the crust. The earth's crust moves to the inner core
The earths crust is moved rather than pulled by things called convection currents. This is when heated rock from the earths core rises up and reaches the crust where it cools. It then sinks down again and carries on in a circle which moves the crust
earths thin, rocky crust is composed of silicon, aluminum, calcium, sodium and potassium.
plates are moving beneath the earth's crust.
The Earths crust and upper part of the mantle is called the Lithosphere
The earth's crust is not stress
Earthquaks are caused by the earths tectonic plates moving over each other.Nothing is caused by the earths crust its just dirt and rock.
Oceanic crust is denser than continental crust, it floats lower in earths mantle.
Oceanic Crust (: <3
the earths crust is made out of rocks
the crust is the thinnest of the three. the thinnest on the crust is the LITHOSPHERE
in the earths mantle
earths crust and core
half of earths layer
The Earths crust consists of continental crust and oceanic crust. Continental crust is mostly granitic rock with an average density of 2.7g/cm3, while oceanic crust is made go basaltic rock with a density of 3.3g/cm3.
The mantle is located between the earths core and crust. The mantle is estimated to be about 1,800 miles or 2,896.8 kilometers down from the earths crust.
A mega earthquake is seismic activity below the earths crust that causes fluctuations in the earths tectonic plates. This forces the ground to shake and the earths crust to crack.