why are there inner and outter planets in our solar system?

Answer 1

We classify "inner" and "outer" planets based on their form and chemical composition.

The inner, or terrestrial, planets were so close to the Sun whe the solar system formed that any elements lighter than about 6 atomic masses, or the size of carbon, were ripped away by the immense solar wind when the Sun entered the "T Tauri" stage, and "ignited".

The outer planets, or "gas giants", were far enough from the Sun that they were able to retain the smaller elements such as hydrogen and helium, which over time coalesced into the planets we have today.

Answer 2

There are Inner and Outer planets due to Gravity. The gravitational pull of the sun pulls in the heavier elements which form the inner planets. The other planets past the astroid belt are Gas Giants. They are made of ligher matterials that were not pulled in closer to the sun at the formation of the solar system.

Answer 3

The inner planets are closer to the Sun than the Earth and the outer planets are farther from the Sun than the Earth. So it is all relative to the Earth.

Answer 4

inner planets close to the sun all have a solid surface
astroid belt
outer planets past astroid belt all gas giants
now it dosen't even have an exception because of pluto not being considered a planet anymore

just observations if nothing else

Answer 5

Inner planets are the planets closets to the sun, and it's a solid planet. Outer planets are large body of gases.

Answer 6

Inner planets are the planets closer to sun, before the asteroid belt.
Outer planets are the planets after the asteroid belt.

Answer 7

The inner plaints are the plaints in the range suitable for life or close to the sun. Most of you outer plaints are either gas or made of rock and ice