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Thread: Science Buffs
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1st July 2012, 03:01 PM #1
Science Buffs
This one is for the science buffs out there. If we continual to use the earth resource’s like coal and oil, how much effect will this have on the earths weight. Will this have any effect on the earths distance away from the sun EG will we move away from the sun or get closer to it?
Davidgiveitagoturning @hotmail.com
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1st July 2012, 04:00 PM #2
Hi DJ.
A very interesting question indeed.
I don't know if anyone could calculate an answer for you, but it will be interesting to read the replies to your question.
However I think your question might be irrelevant in the long term, as the earth will die in a few million years, due to sun activity.
Check on line for the technical information of the above statement.
That is why I laugh at "Climate Change", our planet has been changing since day 1, whenever that was.
We are now, simply in a better, technological manner, able to record the daily events of earth and broadcast these events in real time around the planet.
Yes we have climate change, but earth always has.
Hope you get a good answer to your question.
Paul.I FISH THEREFORE I AM.
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1st July 2012, 04:35 PM #3
With combustion and any other chemical reaction there must be conservation of mass, so whatever mass of reactants is consumed will produce exactly the same mass in products. Therefore there will be no change in mass as a result of these chemical reactions. In fact the earth is gradually putting on weight from the stuff it traps in its gravity field. I don't know the physical effect of this on the orbit but it is likely to be vanishingly small. The Earth will eventually be consumed by the sun as it grows and dies, a long way off and it is entirely likely that mankind will be wiped out even before then by an asteroid collision or some other natural cataclysm or by self-induced destruction.
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1st July 2012, 04:54 PM #4
I had to check if this was in the jokes section first.
Matter cannot be created or destroyed (not totally true if you want to look up Pi and Mu Mesons).
Unless chuncks are flying off the earth or flying onto it it still has basically the same mass.
Your in more trouble from the poles shifting every squillion years or an Ice age.
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1st July 2012, 07:50 PM #5
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I think you mean a few billion years? (approx. 5 billion or so, we are roughly half-way through the sun's lifespan)
That is why I laugh at "Climate Change", our planet has been changing since day 1, whenever that was. We are now, simply in a better, technological manner, able to record the daily events of earth and broadcast these events in real time around the planet.
Yes we have climate change, but earth always has.
Hope you get a good answer to your question.
Paul.
Back on the original question, as others have mentioned, the total mass of the earth won't change, but it will be getting redistributed. Whether or not that does anything to change local gravitational conditions, I don't know.
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1st July 2012, 09:36 PM #6
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1st July 2012, 10:16 PM #7
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1st July 2012, 10:19 PM #8
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Exactly (to 50kg of fuel burnt = 50kg of byproducts). From memory, the exception is with nuclear reactions. There is some mass lost with every nuclear reaction - that's essentially what gives the enormous amounts of energy released. The amounts involved though are vanishingly small compared to the mass of the Earth
The other day I described to my daughter how to find something in the garage by saying "It's right near my big saw". A few minutes later she came back to ask: "Do you mean the black one, the green one, or the blue one?".
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1st July 2012, 10:30 PM #9
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2nd July 2012, 12:20 AM #10
The earth is actually getting heavier, at the rate of 3-7 tonnes a year due to dust and meteorites; however the sun is loosing mass - about four million tonnes per second - via heat/light radiation (not counting solar wind losses).
It is possible to see shifts in the earth's gravitational field due to mass redistribution after major earthquakes - http://www.newscientist.com/article/...te-orbits.html
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3rd July 2012, 01:34 AM #11
.......um......what about the increasing population, doesnt that add anything......
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3rd July 2012, 01:56 AM #12
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The numbers being quoted are on the "small side" but this explains it far better than I could.
BBC recently asked physicist and Cambridge University professor Dave Ansell to draw up a balance sheet of the mass that's coming in to the earth, and the mass going out to find out if the earth is gaining or losing mass. By far the biggest contributor to the world's mass is the 40,000 tonnes of dust that is falling from space to Earth every year. 'The Earth is acting like a giant vacuum cleaner powered by gravity in space, pulling in particles of dust,' says Dr. Chris Smith. Another factor increasing the earth's mass is global warming which adds about 160 tonnes a year because as the temperature of the Earth goes up, energy is added to the system, so the mass must go up. On the minus side, at the very center of the Earth, within the inner core, there exists a sphere of uranium five mile in diameter which acts as a natural nuclear reactor so these nuclear reactions cause a loss of mass of about 16 tonnes per year."
Pickens continues: "What about launching rockets and satellites into space, like Phobos-Grunt? Smith discounts this as the mass is negligible and most of it will fall back down to Earth again anyway. But by far the biggest factor in earth's weight loss are the 95,000 tonnes of hydrogen that escape from the atmosphere every year. 'The other very light gas this is happening to is helium and there is much less of that around, so it's about 1,600 tonnes a year of helium that we lose.' Taking all the factors into account, Smith reckons the Earth is getting about 50,000 tonnes lighter a year, which is just less than half the gross weight of the Costa Concordia, the Italian cruise liner that recently ran aground."
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3rd July 2012, 05:59 AM #13
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3rd July 2012, 07:25 AM #14
Global Warming
Its a bit hard to get your head around the Global Warming theory when its currently Minus 6 at the moment outside.
Regards Mike
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3rd July 2012, 08:33 AM #15
Well the Higgs bosun has been found. July 3 and the world still hasnt ended
God particle is 'found': Scientists at Cern expected to announce Higgs boson particle has been discovered on Wednesday | Mail Online"We must never become callous. When we experience the conflicts ever more deeply we are living in truth. The quiet conscience is an invention of the devil." - Albert Schweizer
My blog. http://theupanddownblog.blogspot.com
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