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Hydrogen and Helium

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What are two major differences in the composition of the inner and outer planets?

the inner planets are rocky and warm and the outer planets are made out of gas and is cold


What are the two major differences in the composition of the inner and outer planets?

the inner planets are rocky and warm and the outer planets are made out of gas and is cold


What are two outer planets that are about the same size?

Uranus and Neptune are two outer planets that are similar in size. Both planets are known as ice giants and are similar in diameter and mass.


The outer planets are made of what two gases?

Helium and hydrogen =|


What are the inner planets and the outer planets and how do the planets in the two groups differ?

The inner planets are Mercury, Venus, Earth and Mars. The outer planets (they are separated by the asteroid belt) are Jupiter, Saturn, Uranus, and Neptune. The outer planets are different than the inner planets because the outer planets are not solid. They are all made up of gas. However, the inner planets are rocky and hard.


What two things does earth have in common with the outer planets?

Earth and the outer planets are all considered part of the solar system. They all orbit the sun. Additionally, they are all made up of various elements and materials found in the universe.


What are two ways that the eight planets can be classified?

They can be classed as terrestrial planets or gas giants, or inner and outer.


What are the two major groups that planets are divided?

Inner rocky planets and outer gas giant planets. (There are also Ice giants and dwarf planets)


What is the two main gases of the atmospheres of the outer planets?

amonia, hydrogen,


What are the two main gases found in the outer planets?

helium and hydroen


Why are some planets referred to as outer planets?

The planets in the solar system can be sorted to two types: inner planets that are the four closer planets to the Sun, which are rocky and small. And outer planets which are the four other planets which are gaseous and very large.


What is the inner and outer planets and contrast the two groups of planets?

The four inner, rocky planets are also known as the terrestrial planets. These are; Mercury, Venus, Earth and Mars. The four outer gas giant planets are Jupiter, Saturn, Uranus and Neptune. The inner planets are smaller and have a higher average density. The outer planets are much larger, but have no real surface - just atmosphere that gets thicker as you travel inwards. The outer planets all have a ring system (the inner planets dont) while the outer planets have captured a lot more natural satellites or moons than the inner planets.