They are Mercury, Venuse, Earth and Mars: together these comprise the inner planet or terrestrial planets.
Yes. They are the terrestrial planets.
YES.
They all have solid, rocky surfaces.
They are all compact objects with rocky, accessible surfaces.
the inner planets (Mercury, Venus, Earth, Mars) all have rocky solid surfaces. The outer planets (Jupiter, Saturn, Uranus, Neptune) all have gaseous atmospheres and liquid surfaces. Pluto is very dense and has a rocky surface.
Yes. The Earth has a lot of water too, of course.
There is no particular reason why the outer planets are gas and the inner planets are rock, but the outer planets have icy cores because they are all far away from the sun.
All of them. Mercury, Venus, Earth, and Mars.
Although itis not known totally, but most if not all solar systems will contain rocky planets and planetesimals.
Mercury, Venus, Earth, and Mars are all terrestrial planets, meaning they have solid, rocky surfaces.
they are rocky and have terrain areas the rest of the planets are all gas
All planets with solid surfaces have craters.