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Because the temperature is high enough that the thermal energy of a molecule or atom means that its velocity is higher than the escape velocity (about 7 miles/sec for the Earth). For a given energy, velocity2 is proportional to energy/mass.

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Are outer planets denser than smaller planets?

No. The outer planets are gas planets, which are much less dense than the inner terrestrial planets.


How are the four outer planets similar?

The four outer planets (Jupiter, Saturn, Uranus, Neptune) are all gas giants composed mostly of hydrogen and helium. They are larger and less dense than the inner planets, with no solid surface. Additionally, they all have ring systems and multiple moons.


Are gases more dense than solids?

In general, gases are less dense than solids because the particles in gases are more spaced out compared to the particles in solids. This is due to the lower attractive forces between gas particles, allowing them to move more freely and occupy a greater volume.


Is planet Mars the densest planet?

Not at all. Mars is the least dense of the rocky planets. Earth is the densest planet in the Solar System because of its large iron core. Mercury and Venus are only slightly less dense.All of the Gas giants are much less dense than the rocky planets. The least dense, Saturn, is actually less dense than water. (All of the gas giants have a much greater mass than the rocky planets but density is mass divided by volume)


Is it true of the more massive planets in the solar system tend to be less dense than the lower mass planets?

Yes. Rock comes and packs together which is what smaller planets are made of. Gas sort of is held together by the core of a planet but still doesn't have enough pressure to hold all the gases tight to the core.

Related Questions

Why are the outer planets less dense?

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.


Are the outer planets less dense?

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.


Are solids less dense than gasses?

In general, in our daily experience, no. But there are counter-exceptions.


Is Pluto denser than the terrestrial planets?

No. Pluto is significantly less dense than the terrestrial planets. A large portion of Pluto is made of ice, which is less dense than thr eock and metal that compose the terrestrial planets.


What are some planets with less density than water?

they are gas, and gas is less dense


How is Saturn more dense than other planets?

Actually, Saturn is the least dense of all planets, the only planet less dense than water, at 687.00 kg/m³.


Are outer planets denser than smaller planets?

No. The outer planets are gas planets, which are much less dense than the inner terrestrial planets.


How are the four outer planets similar?

The four outer planets (Jupiter, Saturn, Uranus, Neptune) are all gas giants composed mostly of hydrogen and helium. They are larger and less dense than the inner planets, with no solid surface. Additionally, they all have ring systems and multiple moons.


Why does flame burns upwards?

The flame burns "up" because it is really the hot gasses that are burning and hot gasses rise because they are less dense.


The Jovian planets are more massive but less dense than the terrestrial planets?

Yes, that is correct. The Jovian planets are composed mainly of gases like hydrogen and helium, making them less dense overall compared to the terrestrial planets which have solid surfaces. Additionally, the Jovian planets have much larger volumes due to their gaseous compositions, leading to their greater mass.


What sort of surfaces do the inner planets have?

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.


Is carbon dioxide less dense than the surrounding gasses in a room?

Air consists mostly of Nitrogen. Nitrogen's Molar Mass is 14.01. Carbon Dioxide's Molar Mass is 44.01. Therefore CO2 is more dense that Air (surrounding gasses)