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There's a more scientific way to explain it but heres a simple one; If you have a balloon filled with helium where does it want to go? Up because its lighter than air so earths gravity is having a lesser effect on it. SO if its not in the confines of the balloon it will keep going until it reaches the outer edges of the atmosphere, at this point it will slowly 'leak' off into space and it will do so first as its lighter than most other gases floating around in the upper atmosphere
Hydrogen and helium are gases that can reach escape velocity due to their low molecular weight and the high temperatures in the upper atmosphere. Additionally, the Earth's gravity is not strong enough to hold on to these light gases, so they can gradually escape into space.
No planet can hold any gas. Everything escapes, the only question is how fast.
Atmosphere is lost faster, when:
gas is lighter
temperature is higher,
gravity is lower,
planet has smaller size.
Potential energy of helium atom near the surface is
P = -mgRe = -μ/Na gRe
Exponential factor in Boltzmann distribution is
exp(-P/kT) = exp(μ/Na gRe / kT) = exp(μ/(RT) gRe)
Assuming T= 300 K we have
μ/RT gRe = 0.004/(8.3 300) 9.8 6,370,000 = 100
So once per exp(-100) ~ 10^-43 attempts at escaping helium atom manages to do so. Probabilty 10^-34 is very small, but it sharply depends on temperature. Throw in 1000K and you have p ~ 10^-13, which means rather quick escape.
Conclusion:
Planet Earth is unable to hold lighter gases, namely hydrogen H2, HD, D2, and helium He4 and He3. Heavier gases like nitrogen and oxygen are safe.
Helium is lower density than the air, thus rises by buoyancy. As it rises the air pressure outside decreases and the ballon expands from the pressue inside.
they've left because of their decomposition by ultra-violets rays
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What is the factor in determining the amount of thrust a rocket requires to leave the earths atmosphere?
Payload weight
In what ways does water leave earths surface and enter the atmosphere?
Water leaves Earth's surface and enters the atmosphere through processes such as evaporation from oceans, lakes, and rivers, as well as transpiration from plants. Additionally, water is released into the atmosphere through sublimation from snow and ice.
What is the main factor in determining the amount of thrust a rocket requires to leave the earths atmosphere?
The main factor in determining the amount of thrust a rocket requires to leave the Earth's atmosphere is the mass of the rocket. The heavier the rocket, the more thrust is needed to overcome Earth's gravity and propel it into space.
Why is the troposphere cold?
The troposphere is colder at higher altitudes because the air is less dense, allowing it to expand and cool as it rises due to decreasing atmospheric pressure. Additionally, the troposphere's temperature decreases with altitude because it is primarily heated from below by the Earth's surface.
Which process does water leave leave the hydrosphere and enter the atmosphere?
The process by which water leaves the hydrosphere and enters the atmosphere is called evaporation. This occurs when water from bodies of water or moist surfaces, such as soil, is heated by the sun and changes into water vapor, rising into the atmosphere.
When did the Apollo 11 leave Earths Atmosphere?
In march 14 1968
Can a hot air balloon leave earths atmosphere?
No, a hot air balloon cannot leave Earth's atmosphere. Hot air balloons rely on the Earth's atmosphere to provide lift for their flight. They are designed to operate within the troposphere, the lowest layer of Earth's atmosphere.
After a single subatomic particle is removed from an atom of helium the helium atom becomes an atom of hydrogen What subatomic particle was removed?
A single proton was most likely removed from the helium atom to result in an atom of hydrogen. Helium typically has two protons, so removing one proton would leave one, transforming it into hydrogen, which has one proton.
What was the first ever man made object to leave the earths atmosphere?
The first man-made object to leave Earth's atmosphere was the V-2 rocket launched by Germany on October 3, 1942.
Does water vapor enter into space and leave the earth?
No. However, some water vapor in the upper atmosphere is split apart into hydrogen and oxygen by ultraviloet radiation. Some of this hydrogen leaves the atmosphere. This rate of loss is tiny, however.
Where does the earths atmosphere stop?
If you travel some 12. 5 miles into the sky, you will leave roughly 99 percent of the atmosphere behind. At 30 miles up, the density of the atmosphere is roughly one million times less than at the surface.
What is the factor in determining the amount of thrust a rocket requires to leave the earths atmosphere?
Payload weight
Which atoms are more likely to have the escape velocity to leave the planet heavy ones such as nitrogen or helium and hydrogen?
Think about a helium filled balloon. You know that it floats in air (which is 80% nitrogen). Light gases (H and He) rise because they are light. The pull of Earth's gravity is greater on heavier nitrogen. So the H and He have less gravitational pull to overcome and escape the Earth's atmosphere much more easily.
How far do you have to travel in order to leave the earths atmosphere and go into space?
The boundary between Earth's atmosphere and outer space is defined by the Kármán line, which is at an altitude of 100 kilometers (62 miles) above sea level. To officially leave Earth's atmosphere and reach space, you would need to travel at least this distance vertically.
When does the main sequence star phase of a star end?
The "main sequence" is the region (on the HR diagram) for stars which burn hydrogen-1. Once stars use up most of their hydrogen-1 (and have significant amounts of helium-4), they leave the main sequence.
Will the sun ever go out AND WHY?
Yes. The sun is powered by nuclear fusion as it converts hydrogen into helium in its core. This hydrogen will run out in about 5 billion years. It will expand to many times its original size before contracting again and fusing helium. After that it will shed its outer layers and leave behind a small remnant called a white dwarf.
In what ways does water leave earths surface and enter the atmosphere?
Water leaves Earth's surface and enters the atmosphere through processes such as evaporation from oceans, lakes, and rivers, as well as transpiration from plants. Additionally, water is released into the atmosphere through sublimation from snow and ice.
