Because they 4 inner planets are nearer the Sun, which warms them with its heat.
The inner planets are smaller than the outer planets.
The "inner" planets are on the "inside" of the asteroid belt, while the "outer" planets are on the "outside" of it
The outer planets are larger.
they are larger but not rockier then the inner planets the outer planets are made of gas.
The inner planets, which are closest to the Sun, are:MercuryVenusEarthMarsThe outer planets, which are farther away from the sun are:JupiterSaturnUranusNeptune
The inner planets are typically warmer than the outer planets. This is because the inner planets are closer to the sun and receive more direct sunlight, leading to higher temperatures. In contrast, the outer planets are much farther from the sun and are colder as a result.
Inner planets
The inner planets, also called terrestrial planets, are closer to the Sun and have solid surfaces, while the outer planets, known as gas giants, are farther from the Sun and composed mostly of gas. Inner planets are smaller and have higher densities, while outer planets are much larger and have lower densities. Additionally, inner planets have few or no moons, while outer planets have numerous moons.
the outer planets are gaseous and the inner planets are not
outer planets are gas giants whille inner planets are just rocky planets. that includes that outer planets have significant amount of mass than the inner planets
The inner planets are all rocky planets. The outer planets are completely made up of gases. The inner planets are much smaller than the outer planets.
The inner planets are smaller than the outer planets.
The inner planets are small, the outer planets are huge in comparison.The inner planets have rocky surfaces, the outer planets are gas giants.All of the outer planets have rings. None of the inner planets does.All of the outer planets have several moons, some of them quite large.
Planets closer to the sun will receive more of the suns energy per unit of area on their surface than planets further from the sun, so will generally be hotter.
The inner planets are smaller than the outer planets. This may be because the outer planets are called gas giants. This means that gas can accumulate in size at times, and this can be one of the situations.
The four inner, rocky planets are also known as the terrestrial planets. These are; Mercury, Venus, Earth and Mars. The four outer gas giant planets are Jupiter, Saturn, Uranus and Neptune. The inner planets are smaller and have a higher average density. The outer planets are much larger, but have no real surface - just atmosphere that gets thicker as you travel inwards. The outer planets all have a ring system (the inner planets dont) while the outer planets have captured a lot more natural satellites or moons than the inner planets.
The "inner" planets are on the "inside" of the asteroid belt, while the "outer" planets are on the "outside" of it