All Questions
Tagged with earth atmospheric-science
87
questions
3
votes
2
answers
60
views
Why don't hovercrafts move West relative to the Earth [duplicate]
Suppose that there is a hovercraft floating a few centimetres above the Earth's surface. As it is disconnected from the Earth, which is spinning from West to East, shouldn't it appear to move East to ...
- 363
5
votes
1
answer
936
views
Where do the gases such as hydrogen and helium end up after leaving the earths atmosphere?
I've heard that gases like hydrogen and helium leak out of the earth's gravity a little by little.
but where are they going? where do they end up after leaving earth's pull?
would the sun pull them ...
- 105
2
votes
1
answer
1k
views
Why can atmospheric re-entry heat up the air into plasma?
The adiabatic processes of re-entering earth from a spaceship, creates intense heat. Heat in the range of 1700-2000 degrees Celsius.
I've read the the temperature in the air molecules generate a ...
- 768
0
votes
0
answers
28
views
Generating power with a "straw" to space... Is it possible? [duplicate]
Imagine you have a straw in a glass of water. If you put a turbine inside it somehow and move the glass, pour water in and out of it etc, you would see the water level rise and fall, and the turbine ...
- 113
0
votes
0
answers
22
views
How do thunderstorms generate ionospheric potential?
In all the explanations of how global electric circuit on Earth works, I've always encountered statements like "thunderstorms generate ionospheric potential" (which is about 250 kV).
E.g. here: https:...
- 11
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
2k
views
Does a helicopter that simply hovers remain in the same spot on earth? [duplicate]
Ignoring statistical variation in wind, will a helicopter that only applies force perpendicular to a perfectly sphere earth remain in the exact same spot relative to the earth?
I am arguing with ...
- 19
0
votes
1
answer
690
views
What would happen to the water bodies if gravity ceased to exist on Earth?
If water stopped flowing (it would stop flowing downwards from mountains and all)
then, would it start rising upwards? If it floats on the space ( I say space because there'd not be any atmosphere) ...
- 465
2
votes
3
answers
350
views
Is there a difference between the red sky in the morning and in the evening?
It certainly has a different feeling to it, but
does the temperature or earth's rotation or the clouds
or anything else really make it two different physical
phenomena or at least different colors?
...
- 185
3
votes
1
answer
1k
views
How much does temperature affect the time of sunrise?
Please forgive me if this is a dumb question, or if my understanding of basic physics is wrong. Please feel free to correct me.
As I understand it, if the Earth didn't have any atmosphere, then the ...
- 133
6
votes
2
answers
258
views
Blocking of infrared radiation from the sun by $\rm CO_2$ [duplicate]
Why is the infrared heat from the sun not prevented from entering the earth's atmosphere by $\rm CO_2$ to the same extent that it is prevented from leaving the Earth's atmosphere?
- 69
0
votes
1
answer
98
views
How do we not feel the speed of rotation of Earth?
Many people say, we don't feel the speed because everything around us including the air moves with the same speed, but I am not satisfied with the explanation. If it was so, shouldn't we feel a huge ...
- 101
22
votes
2
answers
9k
views
What is the scientific explanation for radio waves bending around the Earth?
The experiment
This experiment is documented in a documentary called Convex Earth. The exact location the following information is taken from starts at 14:25.
High frequency directional antennas are ...
- 331
4
votes
1
answer
5k
views
Why microwaves used in satellite communications?
I've been reading recently that:-
EM waves with a shorter wavelength have shorter range in air/other medium
Microwaves are used in satellite communications over radio waves.
This doesn't make sense ...
3
votes
1
answer
223
views
Are North aurora and South aurora produced by positive and negative particles respectively?
Are North aurora and South aurora produced by positive and negative particles respectively?
- 59