Because Jupiter is mainly hydrogen.
yes
They are different because terrestrial planets is any of Earth like planets including: Mercury, Venus, Mars, and Earth. However jovian planets are the Jupiter like planets including: Jupiter, Saturn, Uranus, and Neptune
While terrestrial planets are made of rock and have gases in the atmosphere, jovian planets are made almost entirly of gases. If an atmosphere is made of gases in a planet, then the atmosphere of the planets with more gases will be thicker.
The cores of jovian planets are very similar to terrestrial ones. Jovian planets are simply a more evolved form of terrestrial planet contrary to popular perception. Jovian planets often have a lot of hydrogen, helium, methane, and/or volatile ices to make up its atmosphere to the point where oceans of these components cover the terrestrial core and billow the atmosphere to large proportions. Terrestrial planets absorbed less of these components from the leftover solar nebula leaving only the rocky surface and maybe some gas of an atmosphere.
The thinnest atmosphere belongs to planet Mercury . . . it may have no atmosphere, at all.
cause it felt like it
Jovian planets do not have a solid surface, therefore their atmospheres are thick all the say to where their surface would be. Their atmospheres have more gasses than those surrounding terrestrial planets.
Terrestrial planets have terra firma, a.k.a. hard ground. The gas giants are giant balls of gas.
The terrestrial planets are small in size and mass, they are rocky, solid and dense, all four terrestrial planets have 3 moons between them. They are warm and close to the sun. Terrestrial planets USUALLY have thin atmosphere. The Gas Giants are huge in size, have rings made from dust, debris, ice, rock. They very cold (not close to the sun at all) and light (made from gas.) They have several moons between them (167, I think) and lastly Gas Giants usually have thick and deep atmosphere.
This is the planets atmosphere, it can then be broken down into further sections.
Yes. all the terrestrial planets have atmospheres. however, in the same area that there are 10 Billion Billion Atoms in earth's atmosphere, (about 1 cubic in) there are about 10 million atoms in mercury's. maercury has almost no atmosphere, and we don't even know what it is, but both mars and Venus's atmospheres are 95 % CO2, but venus's atmosphere is thick, even thicker than earth's, but mars's is thinner than earths. all the terrestrial planets have some kind of atmosphere.
The sun is a star, not a planet. the terrestrial planets are also made of either rock, ice, or gas.