Terrestrial planets contain much more of the heavy elements (such as iron and silicon) and less of the lighter elements (such as hydrogen and helium). Terrestrial planets are smaller and denser, and are also closer to the sun, and hence warmer as well. Gas giants are distant and cold.
why
The Asteroid Belt is a demarcation between the gas giants and terrestrial type planets.
gas giants are composed of gas while terrestrial planets are composed of solid matter
Terrestrial planets have terra firma, a.k.a. hard ground. The gas giants are giant balls of gas.
All terrestrial planets are able to maintain life, but the gas giants cannot.
All of the terrestrial planets are within 1.52 AU of the Sun. All of the gas giants are greater then 5 AU of the sun. The relationship is that most of the terrestrial planets are very close to the sun while gas giants are much further away.
Gas giants are much bigger, are more distant from the sun, and are composed mostly of gas (particularly methane and ammonia) whereas the terrestrial planets are composed mostly of rock and metal, are closer to the sun, and are smaller.
gas giants
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The Terrestrial Planets are Mercury, Venus, Earth, and Mars. The Gas Giants are Saturn, Jupiter, Uranus, and Neptune.
No, there is a large interval between the inner, terrestrial planets and the outer gas giants, which is filled by the asteroids. It is not a gap in the sense that it is filled with other things.
No, there is a large interval between the inner, terrestrial planets and the outer gas giants, which is filled by the asteroids. It is not a gap in the sense that it is filled with other things.