they are small and have rocky surfaces
All the inner planets are terrestrial planets.
None of the inner planets have rings.
They have no rings.
The inner planets are all terrestrial - they are "rocky". The outer planets are gas giants.
All for of the inner planets are similar in composition. They all have a clearly defined surface, unlike the gas giant planets.
"The Inner Planets" is the common term for the four planets closest to our sun.
none of the inner planets
Inner planets. are inner & outer planets. are outer
The inner planets are Mercury, Venus, Earth, and Mars. They are "inner" because the are the first 4 planets from the Sun.
The inner planets Mercury, Venus, Earth, Mars are are all relatively small, they are all rocky, they all have a relatively thin atmosphere.
After the inner planets you get the outer planets.
Inner planets