All Questions
11
questions
0
votes
3
answers
312
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Doesn't Increase of Potential Temperature with Height contradict Adiabatic Nature of Processes within Troposphere?
According to my education as a sailplane pilot our troposphere is in good approximation subject to adiabatic processes.
Using adiabatic equations of (nearly ideal) ...
- 1,299
2
votes
1
answer
256
views
How has the Earth's air pressure varied over geological time scales?
It is estimated that the Earth is losing about $5 \times 10^7 kg$ per year. Most of it due to hydrogen loss. I suppose this has an impact on the pressure of the atmosphere in general.
Thus, I am ...
-1
votes
2
answers
83
views
If Earth had gravity and atmosphere, but no Sun, will Temprature change with altitude?
Gravity pulls down the atmosphere thus creating higher Atmospheric Pressure close to the surface,
This pressure is adding Force to air molecules,
and since Heat is essentially adding force to ...
- 19
36
votes
3
answers
16k
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Why does the Earth cool at night time?
I do understand that open water and open ground cools by the means of convection — lower air takes the heat and goes up, where it cools.
But why does the Earth lose energy and where does it go? Does ...
- 481
48
votes
9
answers
21k
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Why is air not sucked off the Earth?
People said outside earth is a vacuum. But the air does not get sucked from the Earth's surface. Some said it is due to gravity and some said the speed of air molecules are not high enough to escape....
- 609
2
votes
0
answers
237
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Maximum temperature possible on earth
What is maximum temperature that can we have on earth on a single day?
Lets say an air mass is static over an area and there is no way for air mass to move, sun warming it up would increase ...
- 167
0
votes
2
answers
195
views
Where do atoms of H and He go when they rise in the atmosphere? [duplicate]
What happens to atoms/molecules of H and He when we let them freely fly in atmosphere do they get into space? Is there any particular way to enumerate the 'force' that drives them upwards? Does ...
- 383
5
votes
6
answers
5k
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Why it is colder in mountains, at high altitudes?
The conventional answer is to say that "lower temperature follows from lower pressure because temperature is average molecular energy (average speed)". For instance "Temperature is a measure of ...
- 1,013
4
votes
2
answers
1k
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Average surface temperature of Earth [duplicate]
I had a question in my school exam.
Will the average surface temperature of the Earth be lower or higher, if there was no atmosphere?
Now, the answer expected is "The avg temp will be lower, because ...
- 251
6
votes
4
answers
182
views
Bulk flow of air in a long tube between Antarctica and Australia?
I have a 5km diameter clear plastic tube which is open at each end and runs from the center of Antarctica to Lake Eyre in Australia. The tube is on the ground where it can be and at sea level on the ...
- 2,421
3
votes
4
answers
1k
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Will the earth never cool, but only get hotter?
Since the earth is in a vacuum and therefore there is no thermal transfer of heat to anything else, how can it even cool down? It seems like its average temperature would always be constant, ignoring ...
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