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rocks only they are compact and hard

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How the inner planets are similar to each other?

The four inner planets are all made of rock or are rock based but the four outer planets are all made of gas or gas based.


Are all outer planets gas?

yes but all inner planets are rock


What is the main difference between inner planets and outer ones?

Inner planets are mostly rock and outer planets are mostly gas.


What divides the planets into inner planets and outer planetss?

the 4 inner planets are rock planets and the 4 outter planets are gas planets separated by the asteroid belt


How are the compositions of the inner planets and outer planets different?

A basic, simplified answer is: The inner planets are mainly rock with iron cores. The outer planets are mostly gas, or liquefied gases.


Why are the inner planets smaller and made of rock while the outer planets are large and made of gas?

juptier


How are the compositions of the inner and outer planets different?

A basic, simplified answer is: The inner planets are mainly rock with iron cores. The outer planets are mostly gas, or liquefied gases.


What are the characteristics of outer and inner planets?

The inner planets are the first 4 planets from the sun, they are made of rock. After the in er planets is an asteroid belt. Behind the belt are the 4 outter planets. They are made of gas and are called "gas giants". These are called outter planets.


Are inner planets gas giants?

No, the inner planets are the terrestrial or rocky planets. The outer planets are the gas giant planets; Jupiter, Saturn, Uranus and Neptune. They are mainly made up of Hydrogen and Helium gas.


What are the general characteristics of the 4 outer and 4 inner planets?

The 4 inner planets (Mercury, Venus, Earth, and Mars) are solid planets made of rock. The 4 outer planets are gas giants.


How do the planets in the two groups different?

The first 4 planets, Mercury, Venus, Earth, and Mars, are called rock planets, and the last 4, Jupiter, Saturn, Uranus, and Neptune, are the gas planets. The main differences between these two groups are that the rock planets are made of rock, the gas planets are made of gas, the rock planets are typically smaller than the gas planets, and the gas planets have rings.


Is mars made up rock or gas?

inner planets: Mercury, Venus, Earth, and Mars ---> rocky surfaces outer planets: Jupiter, Saturn, Uranus, and Neptune ---> gas planets