Mercury has a small, hard, and rocky core. It is the smallest planet in our solar system and is primarily composed of a large metallic core surrounded by a silicate mantle and crust. This unique structure contributes to its high density compared to other planets. Mercury's core is believed to make up a significant portion of its total volume.
The inner planets have rocky, hard surfaces, are small, and have a more presentage of containing metal objects.
The whole planets made up of gas, and underneath that is a layer of liquid and then a hard rocky core.
Mercury, Venus, Earth, and Mars are considered the inner planets of our solar system, and they are all characterized as hard and rocky terrestrial planets. They have solid surfaces made up of metal and rock materials, unlike the outer planets which are predominantly composed of gases and liquids.
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.
No because the inner planets are made of rocky and hard substances and the outer planets are made of gassy lighter substances.
In our solar system: Mercury, Venus, Earth, Mars and, if you still want to count it, Pluto.
The Rocky Planets are:MercuryVenusEarthMarsPluto (considered to be rocky most of the time)The Gaseous Planets are:JupiterSaturnUranusNeptuneThe first four planets (Mercury, Venus, Mars, and Earth) are called the inner planets which are closer to the sun and stripped of their light gasses by the sun's solar winds. The solar winds then carry the debris (elements) to where the winds tend to "die down" which is right near Jupiter. Thus, all the debris is mostly swept up by Jupiter and Saturn (which is why they appear so large), however, Uranus and Neptune are less gaseous because they are just so far away from the sun. Therefore, the first four planets are dense with a hard iron core, whereas the last four planets are gaseous and BIG.
i have absolutely no ideato hard for mesorry cant help you today maybe another time
The inner planets, except earth, are made up of rocks. They have a hard surface. The earth would be one of these except we have water. The outer planets are gas giants and do not have a solid surface.
The great distance between the orbits of Mars and Jupiter is almost completely void of anything, save for what is known as 'the asteroid belt'. The asteroid belt is a ring of asteroids and other space rocks of varying sizes that orbit the sun between the orbits of the gas giants and the inner rocky planets. The belt is estimated to be a couple of hundred million km 'wide' but is hard to calculate because the diffuse nature of the belt means that edges are difficult to define. The belt also contains the dwarf planet, Ceres.
As you should know, there are currently 8 planets. Rocky: Rocky Planets are planets made of hard material. Rocky planets can be another word for inner planets or planets located inside the asteroid belt in the Milky Way Galaxy. The four planets that are rocky is Mercury, Venus, Earth, and Mars. Gas: Gas planets are technically planets made of ice, dust, and gas. Gas planets can be another word for outer planets or planets located outside the asteroid belt. The four planets known as the gas planet is Jupiter, Saturn, Uranus, and Neptune. Hoped that Helped!! However, Shoemaker–Levy comet fragments collided with Jupiter's southern hemisphere between July 16 and July 22, 1994, at a speed of approximately 134,000 mph. The scars from the impacts persisted for many months.... So, some say its a gas giant, but if a comet collided with it, made plumes of ash and soil for 1000s of miles across, well... Seems like it has some surface some people won't accept.