They are made of less dense materials. While the inner planets are made primarily of rock, the outer planets are made mostly of hydrogen and helium.
Yes, the large and more massive outer planets are made mainly from Hydrogen and Helium. They are less dense than the smaller terrestrial planets.
The inner, or terrestrial planets are more dense than the outer planets/gas giants/jovian planets. Through a process of differentiation we find inner planets to typically consist of a molten iron core and a less dense silicate crust.
The orbits of the four inner planets are much closer, all orbiting the sun within ¼ billion km. The outer planets are more spread out, but are much larger in size. Their distances roughly double each time as you go out from Jupiter. Average distances of inner planets from sun; Mercury, 57,909,175km Venus, 108,208,930km Earth, 149,597,890km Mars, 227,936,640km Average distances of outer planets from sun; Jupiter, 778,412,010km Saturn, 1,426,725,400km Uranus, 2,870,972,200km Neptune, 4,498,252,900km
The outer planets. The four inner planets (Mercury, Venus, Earth, Mars) are similar to Earth - relatively small, and with a rocky surface. The four outer planets (Jupiter, Saturn, Uranos, Neptune) are gas giants - between 5 and 11 times the diameter of Earth, and made up mainly of gas. They don't have a solid surface you can step on - just gas that gets denser as you go deeper inside.
They don't. In our own solar system this is at best only approximately true. Each of the four inner planets is more dense than any of the four outer planets, but comparing the planets in order from the sun outward, the relationship between them goes:* Merury is more dense than * Venus, which is less dense than * Earth, which is more dense than * Mars, which is more dense than * Jupiter, which is more dense than * Saturn, which is less dense than * Uranus, which is less dense than * Neptune. So, of the possible ways to choose neighboring planets, the inner one is more dense than the outer one in only 4 of 7 cases. Statistically this is no different from what would be expected had they been chosen entirely at random.It was believed until fairly recently that the inner/outer planet division happened because planets near a star (relatively speaking) would be too hot to retain much gas, so inner planets would be terrestrial (high density) and outer planets would be gas giants (low density). The discovery that "Hot Jupiters" not only exist but seem to be fairly common has cast doubt on previous notions, and it's possible that it will turn out that the way our own solar system is arranged is simply a coincidence.
They are made of less dense materials. While the inner planets are made primarily of rock, the outer planets are made mostly of hydrogen and helium.
No. The outer planets are gas planets, which are much less dense than the inner terrestrial planets.
Yes, the large and more massive outer planets are made mainly from Hydrogen and Helium. They are less dense than the smaller terrestrial planets.
Extremely. None of the other planets is as dense as Earth (Mercury is close). Venus is just a little less than Mercury, Mars is about 2/3 as dense as Earth, and the outer planets are much less dense... 1/3 or less (Saturn is about 1/6).
The inner, or terrestrial planets are more dense than the outer planets/gas giants/jovian planets. Through a process of differentiation we find inner planets to typically consist of a molten iron core and a less dense silicate crust.
The orbits of the four inner planets are much closer, all orbiting the sun within ¼ billion km. The outer planets are more spread out, but are much larger in size. Their distances roughly double each time as you go out from Jupiter. Average distances of inner planets from sun; Mercury, 57,909,175km Venus, 108,208,930km Earth, 149,597,890km Mars, 227,936,640km Average distances of outer planets from sun; Jupiter, 778,412,010km Saturn, 1,426,725,400km Uranus, 2,870,972,200km Neptune, 4,498,252,900km
The outer planets. The four inner planets (Mercury, Venus, Earth, Mars) are similar to Earth - relatively small, and with a rocky surface. The four outer planets (Jupiter, Saturn, Uranos, Neptune) are gas giants - between 5 and 11 times the diameter of Earth, and made up mainly of gas. They don't have a solid surface you can step on - just gas that gets denser as you go deeper inside.
no, then inner solid planets are more dense than the outer gas planets
They don't. In our own solar system this is at best only approximately true. Each of the four inner planets is more dense than any of the four outer planets, but comparing the planets in order from the sun outward, the relationship between them goes:* Merury is more dense than * Venus, which is less dense than * Earth, which is more dense than * Mars, which is more dense than * Jupiter, which is more dense than * Saturn, which is less dense than * Uranus, which is less dense than * Neptune. So, of the possible ways to choose neighboring planets, the inner one is more dense than the outer one in only 4 of 7 cases. Statistically this is no different from what would be expected had they been chosen entirely at random.It was believed until fairly recently that the inner/outer planet division happened because planets near a star (relatively speaking) would be too hot to retain much gas, so inner planets would be terrestrial (high density) and outer planets would be gas giants (low density). The discovery that "Hot Jupiters" not only exist but seem to be fairly common has cast doubt on previous notions, and it's possible that it will turn out that the way our own solar system is arranged is simply a coincidence.
The four inner, rocky planets are also known as the terrestrial planets. These are; Mercury, Venus, Earth and Mars. Although much smaller and not as massive as the outer gas giant planets, they are more dense.
The densest planet in the Solar System is Earth.The other inner planets - Mercury, Venus, and Mars - are only a bit less dense; all of them are much more dense than the four giant outer planets.Mercury is nearest the Sun and is the second densest planet.
The 4 Inner planets (mostly rocky and solid):MercuryVenusEarthMarsThe 4 Outer planets (mostly dense gaseous atmospheres):JupiterSaturnUranusNeptuneNotes:Pluto, a dwarf planet, was an outer planet before it got reclassified, but resembles the inner planets.The inner and outer planets are separated by the asteroid belt.When dwarf planets are included, Ceres counts as an inner planet and all the other dwarf planets count as outer planets.