The material continued to accrete to form planetesimals, or pre-planetary bodies. … So the metal and rock that existed close to the forming Sun accreted to form the inner planets. The ice and other materials found farther away accreted to form the outer planets.
What is the major reason the inner and outer planets are so different?
There were relatively few elements of any other kind in a solid state to form the inner planets. The inner planets are much smaller than the outer planets and because of this have relatively low gravity and were not able to attract large amounts of gas to their atmospheres.
What caused the inner planets and outer planets to have different composition?
The outer planets are much larger than the inner planets. Because of their large mass and cooler temperature, they have a very different composition; they are mostly made of light elements with extended atmospheres in a gaseous form. Outer planets exist in much bigger systems than inner planets.
How did the planets form differently?
After the solar nebula collapsed to form our Sun, a disk of material formed around the new star. The temperature across this protoplanetary disk was not uniform. Since different materials condense at different temperatures, our solar system formed different types of planets.
How are inner and outer planets similar?
Inner planets have solid rocky cores, outer planets are mostly gas. Similar in that they are all part of our solar system.
How were the inner and outer planets formed?
So the metal and rock that existed close to the forming Sun accreted to form the inner planets. The ice and other materials found farther away accreted to form the outer planets.
Why are planets different?
why are other planets different than earth? A: Planets have different properties because they are different distances away from the sun, are different sizes, and are made up of different stuff from the earth. Very tiny planets do not have enough gravitational field to keep much of an atmosphere in.
Which statement accurately describes the inner planets?
Which statement accurately describes the inner planets? The inner planets are also called terrestrial planets.
What is the differences between inner planets and outer planets?
The inner planets are closer to the Sun and are smaller and rockier. The outer planets are further away, larger and made up mostly of gas. The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars.