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Answered 2012-02-08 00:52:48

Jovian planets are less dense when they Are compared to terrestrial planets because they are Mostly composed of hydrogen gas.

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Both Venus and Mars have atmospheres composed mostly of carbon dioxide.


Some do. Three of the four terrestrial planets in the solar system have atmospheres: Venus, Earth, and Mars. Only Mercury lacks an atmosphere.


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.



no, these are the gas giants, or four outer gas planets. The terrestrial planets are the four inner planets, which are much smaller.



While the terrestrial planets are mostly rocky with metallic cores, the Jovian planets are huge balls of gas. The Jovian Planets are also much larger than the terrestrial ones.


The terrestrial planets in order from the thickest to thinnest atmospheres Venus, Earth, Mars, and Mercury. Since the gas giants are almost entirely made of gas, it is difficult to determine where the atmospheres end.


a terrestrial planet is an object in space that resembles Earth in size , density, and in its mainly rocky composition


The terrestrial planets are less massive and therefore have less gravity. As a result, much of the lighter gases could escape, in the process of planet formation.


The four Jovian planets in our solar system are Jupiter, Saturn, Uranus and Neptune. The four terrestrial planets are Earth, Venus, Mars and Mercury. The difference between the Jovian planets and the terrestrial planets is that Jovian planets are enormous and made of gasses and ices while terrestrial planets are relatively small and made of rocks and metals. Other differences are that terrestrial planets have high densities, rotate slowly, have no moons or magnetic fields and have thin atmospheres (Earth is an exception because it has a moon and a magnetic field), while Jovian planets have low densities, rotate rapidly, have many moons and a magnetic field and have thick atmospheres.


There are a wide range of atmospheres for terrestrial planets (smaller, rocky planets) depending on their sizes, orbits, and composition. In our solar system, there are 4 very different atmospheres for the 4 terrestrial planets. Mercury - no appreciable atmosphere due to small size and closeness to the Sun Venus - hot, extremely dense carbon dioxide atmosphere (Greenhouse effect) Earth - cool, low density nitrogen atmosphere, oxygen maintained by green plants Mars - very thin, cold carbon dioxide atmosphere, due to small size and distance from the Sun


Size, density, composition, and the rate of the rotation are used to place the planets in either Jovian or Terrestrial.


Well, terrestrial planets are the planets roughly like Earth, in composition. Terrestrial means "Earth-like". These planets are found before the asteroid belt and the outer gas giant planets. Mercury, Venus, Earth, Mars come in this category of terrestrial planets.


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



No. As the name gas giant implies, these planets are made largely of gas. They have extremely thick atmospheres.


Terrestrial planets are Earth-like and are called the inner planets. They are dense, and they are mainly composed of rock and metallic substances with minor amounts of ices. They include Earth, Venus, Mercury, and Mars.


The masses of the gas giants are greater, which would make them larger, and their gravity can hold more massive atmospheres. Due to limits on the compressibility of atmospheric gases, these atmospheres are very deep. The lower solar heating farther from the Sun also plays a role in allowing these planets to maintain a high percentage of their lighter gases (hydrogen, helium) than the inner planets. So, even without their atmospheres, the cores of gas giants would have greater diameters than the terrestrial planets. They are simply bigger planets.


The Gas Giants have a deep gas atmosphere and earth have a not so deep atmosphere


Earth is the terrestrial planet that has oxygen in its atmosphere. Some other elements in the atmosphere are nitrogen and carbon dioxide. Mercury, Venus, and Mars are the other terrestrial planets, but their atmospheres are composed of other elements. For example, Venus' atmosphere is composed primarily of carbon dioxide.


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 outer 4 of the 8 major planets are not terrestrial (Earth-like) because they have dense gaseous atmospheres and no well-defined surface.Jupiter, Saturn, Uranus, and Neptune are all gas giant planets. Uranus and Neptune are also known as ice giants, but they are only cold on the outside.


compare the atmospheres of the four inner planets


The gas giants and the terrestrial planets initially formed in similar ways, however, the powerful solar wind of the young sun stripped away the first atmospheres of the inner planets. The outer planets were less affected by this and so retained their thick atmospheres of hydrogen and helium. Today, the outer planets recieve much less heat from the sun than do the inner planets, allowing various ices to form.



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