Category Archive
The following is a list of all entries from the How Are You Earth? category.
So, Who Have The Instrument To Measure Mass Of The Earth
So, anybody has the the instrument to measure mass of our earth? No one of course! So, why we know that the mass of our earth has the value 5.9736×10^24 kg? Is it fall from the sky? Or it is from epigraphy? Or it carved on legendary stone?
Nope! Of course no!
So, from where people know the mass of the third planet after the sun?
It was started by someone, he was sitting down below apple tree. He fall asleep and then suddenly waken up by a drop-apple to his head. I don’t know why he suddenly thinking about why apple fall to ground, not fall to sky.
Now, who was him? A man who was not unlucky because he was fallen by an apple?
(pict of Newton fallen by apple)
Yup! He was Sir Isaac Newton! Because of a naughty apple, Newton was able to find correlation between earth and things that around it. So do like moon and earth, sun and earth, sun and other planets and of course the mass of the earth..
Sir Isaac Newton derivate a complex formula to find earth and thing around it in mathematical expression. The result is Newton law. There are three.
The first is “sigma F = 0″ which means when force that work on a thing is zero, then the thing will stay motionless or keep moving with constant velocity.
Next is “sigma F = m . a” which means an acceleration (a) on a thing is linier with force that work on it and oppose with mass of the earth. Acceleration direction same with acceleration direction.
The last one is “F act = – F react ” which means “If you push a wall with a certain force, then wall will push you with the same force just like you did it before”.
Hmmm…. So where are the formula to calculate mass of the earth? Now we come to main problem! Newton said that “every particle in the universe always attract other particle with the force which its value is linier with mass of that particles and oppose with quadrate of its distance.”
Mathematically, like this:
F = G (m1. m2 / r^2)
F = force between m1 and m2 (N)
m1, m2 = mass of the particle (kg)
G = Gravitational Constant = 6,673 * 10^-11 Nm^2/kg^2
r = Distance between particles
On this problem, we will determine that
F = G (m1. M / r^2)
M = (F/m1) (r^2/G)
F/m1 = 9.8 m/s^2
R earth = 6,4 * 10^6 m
G = 6,673 * 10^-11 Nm^2/kg^2
Input it… And then you will find the mass of the earth : 5.9736×10^24 kg.
Don’t you ask: Where can i find radius of the earth and Gravitational Constant?
Next post: How to find radius of the earth? Are we going to make the longest tape?
And from where we can get Gravitational Constant?
Also, what is your mass in other planet? You shouldn’t waster a billion dollars to go other planet like Mars, Jupiter or other planet if you just only to measure your own weight! We can do it by using this magic formula!
Earth Inside – Chemical Edition
From the latest post, i have been discussing about what inside of earth, and of course, Mount Chimborazo, Ecuador that make you astonished and say: awesome! Is this one of a earth’s wonder? (For who don’t know what happened in Mount Chimborazo, Ecuador, see my previous post – ??? or you can read here: the farthest place of the earth because the rotational of the earth)
Now, who know the mass of the Earth? Bingo! The answer is approximately 5.98 x 10^24 kg. Whooaaa!!! It is so heavy isn’t? Can’t you still figuring out? It means 5.980.000.000.000.000.000.000.000 kg! What can you imagime it? What is the term for it? Of course, there is no money that can compete that number. If there is, who? no one isn’t it? But there is One…. Do you know who? Our God! Bingo!
Like our body, Earth has a composition too, and it composed mostly by
iron 32,1%
oxygen 30,1%
silicon 15,1%
magnesium 13,9%
sulfur 2,9%
nickel 1,8%
calcium 1,5%
alumunium 1,4%
trace amounts of other elements 1,2%
While our Earth core region composed by
iron 88,8%
nickel 5,8%
sulfur 4,5%
trace elements 1%
At earth’s crust, there is a little more than 47% “thing” that we need everyday, Oxygen. Man who research about earth’s crust was F. W Clarke. He uncovered too that the more common rock constituents are nearly all oxides: chlorine, sulfur and fluorine. This oxides are important exceptions to this and their total amount in any rock (ussually much less that 1%). So, the rock near your house consist of chlorine, sulfur and fluorine. The other 99% more are in below (detail) :
F. W. Clarke’s Table of Crust Oxides Compound Formula Composition
silica SiO2 59.71%
alumina Al2O3 15.41%
lime CaO 4.90%
Magnesia MgO 4.36%
sodium oxide Na2O 3.55%
iron(II) oxide FeO 3.52%
potassium oxide K2O 2.80%
iron(III) oxide Fe2O3 2.63%
water H2O 1.52%
titanium dioxide TiO2 0.60%
phosphorus pentoxide P2O5 0.22%
Total 99.22%
What is silica? Silica principally as an acid, forming silicates and all the igneous rock (a rock that is a result – the vomit – from volcano)
Complicated huh? Well, you don’t have to memorize all of this note. You just need to know what is your earth consisted so that you are not an “alien” in here. At least, you have a little knowledge about the earth you where stand right now. Thanks for the attention! (Of course for who has read my article, please fill up your comment! Is this aricle help you?)
Oh yeah, the last note i want to share with you, let’s love our planet! Keep it to have a longer live by throw garbage in a proper place! And avoid global warming! Love our planet! You can join earthhour.org! Be a earth guardian!
Thanks! Next topic will be more interesting! See ya!
Earth Inside – Shape Edition
Thanks to God that we live at here, Earth, because our planet is a terrestrial planet (rocky body) and is the largest of the four solar terrestrial planets (What is the other planets? Admin don’t know. Please help me then…). Earth also has the highest density, the highest surface gravity and the strongest magnetic field. This is can hold us above the earth and not just let us flying in zero gravity.
Oblate spheroid is the shape of our earth, so it is not all-round. In center, called equator is bulge around (up to100 meters). Its diameter is 12.472 km. If you wan a specific value, take a calculator; 40.000 km/3.14 (Long enough huh? But it’s said that our artery if it extended outward, its length can be reached 5 times around Earth = 5 * 12.472= 62360 km! Amazing !).
Mount Everest and the Mariana Trench make a record that in that place, occur the largest deviations. The rotational of the earth creates equational bulge so that equational diameter is 43 km larger than the pole to pole diameter. If you want to the farthest place of the earth (Which means the farthest from the center of the earth), you must go to Mount Chimborazo, Ecuador.
(Ohhhh, i hope i can get there and take a picture in Mount Chimborazo! Or if i request, can someone send me a picture him or her?) It is because a perfect ellipsoid that compared with Earth, which has a tolerance of abut one part in about 584 or 0.17% which is less that the 0.22% tolerance allowed in billiard balls (source: wikipedia).
Ok, this is for now. In the next time, we will go deeper in Earth! Hope this article make us have a better knowledge about earth, keeping our earth live so that we can open up a secret of the earth and we will say , “Awesome! Is it a miracle! Thanks Lord!”
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