Jupiter, Saturn, Uranus, and Neptune are the gaseous planets in our solar system.
Venus is the only planet orbiting the sun with a thick, hot armosphere and a rocky surface.
When a meteorite slams into a rocky planet's surface, it often makes a crater.
it is very rocky and bumpy Jupiter is a gas planet so it cannot have a surface at all.
None. By definition a rocky planet is mostly rock. Venus, by far, has the densest atmosphere of the terrestrial planets, but the planet itself is mostly rock and is similar in composition to Earth.
Mercury, probably Venus, Earth and Mars.
smooth as a baby's butt!
If you are doing a science project on mars, jupiter, or venus, or even earth, you should say they all have hard and rock surfaces! Mars, is the 2nd smallest planet. Mars is a very red, and rocky planet. Jupiter is more far away, and has less heat. Its surface is hard. Earth, is hard and rock of course... we have islands and canyons, and mountains.. That all counts as... hard and rocky surfaces! Venus is the closest planet to earth. I forgot to say Venus is close to earth, its the same size as earth. It is the best planet close to earth, that can possibly have life. Mercury can too be counted as a surface with a hard and rocky surface... but it would not count to say that in your project or homework assignment. It is not correct. However Mercury is very warm, from the sun balancing on the small planet.
rocky
When a meteorite slams into a rocky planet's surface, it often makes a crater.
Venus is the only planet orbiting the sun with a thick, hot armosphere and a rocky surface.
Saturn does not really have a surface. The only hard part of Saturn is its rocky core. The "surface" of Saturn is actually hydrogen and helium kept in a spherical shape by the planet's gravity.
Venus is called a rocky planet because, like Earth, it has a surface made of rock.
When a meteorite slams into a rocky planet's surface, it often makes a crater.
Ceres is not a gaseous planet. Ceres is not a planet, it is a dwarf planet. Ceres has a rocky surface.
Mars
there are none, if you're not counting Pluto as a planet.
An Icy, Rocky Core.