Only giant planets have hydrogen in their atmosphere because:?

Question

a. This gas was presently only near these planets during the formation of solar system.
b. Of their large gravitational pull
c. They produce hydrogen constantly

Answer 1

B) because hydrogen is lighter than air and through high speed collisions would eventually escape the Earth’s gravitational pull into outer space. Hydrogen is only found in compounds on Earth such as H2, H20, CH4 and not alone.
It is readily found in the gas giants because it can’t escape the planets gravitational pull and at lower levels in the atmosphere of the gas giants is converted to solid metallic hydrogen, because of the great pressures.

Answer 2

the escape velocity of hydrogen is much lower on a small planet like earth than for a large planet like jupiter, so geez, yes gravity has an effect on planetary composition. If this were not the case, Earth would still have a reducing atmosphere because the available hydrogen would far outnumber the available oxygen. Earth is constantly losing hydrogen from the upper atmosphere. I'd throw a number at you but it wouldn't mean much (30 million atoms per square cm per second). See, I told you it wouldn't mean much.

Answer 3

Of the choices you have, B would be the best, but it is just as much due to the fact that they are farther from the sun. The terrestrial planets would probably have been gas giants, too, except that the solar wind blew those lighter gases away. I'll bet Jupiter has a little bit of the gas that was originally around the earth.

Answer 4

Hydrogen is the only maximum ample ingredient in the universe. The solar's gravitational pull on rocky components, to illustrate, the 4 inner planets, replaced into in charge for them to variety close to the solar, whilst the solar's image voltaic wind, blew each and every of the lighter aspects,(hydrogen,methane,and so on.) remote from the solar. that's why the gasoline giants shaped the place they did.

Answer 5

i fink borat/gary is thinkin of nitrogen not hydrogen!!!! still - 'a' is the closest to 'truth' jeesh - who set the question???ALL the answers kinda betray the setter's ignorance!
=)
and...omg, kb - wtf???? u think gravity has something to do with planetary composition??? the only link i can think of there is the fact that the gas giants, if they were a lil larger, could become stars - u need the mass to get fusion going but otherwise...and certainly regarding this q....mass/gravity/weight is totally irrelevant! seriously - u think there's a causal link between gravity and composition?//lol

Answer 6

Hydrogen makes up the majority of our own atmosphere, not just gas giants.