UNIVERSE
SOLAR SYSTEM FORMATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The inner planets all have water
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the inner planets are much bigger than the outer planets
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the outer planets are gas planets
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the outer planets have rings, and the inner planets don’t
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Detailed explanation-1: -The inner planets are closer to the Sun and are smaller and rockier. The outer planets are further away, larger and made up mostly of gas.
Detailed explanation-2: -The temperature of the early solar system explains why the inner planets are rocky and the outer ones are gaseous. As the gases coalesced to form a protosun, the temperature in the solar system rose. In the inner solar system temperatures were as high as 2000 K, while in the outer solar system it was as cool as 50 K.
Detailed explanation-3: -The four inner planets, or terrestrial planets, have solid, rocky surfaces. Earth, the third planet from the Sun, is the only planet with large amounts of liquid water, and the only planet known to support life. Earth has a large round moon. Mercury is the smallest planet and is the closest to the Sun.
Detailed explanation-4: -The planets outside the orbit of Mars, normally Jupiter, Saturn, Uranus and Neptune are called the outer planets.