UNIVERSE
SOLAR STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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spherical objects made mainly of solid, rocky materials
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inner planets
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outer planets
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -The effects of solar radiation have boiled off many of the lighter elements such as hydrogen and helium, from the inner protoplanets. These planets consist therefore primarily of solid material and thus have been termed terrestrial planets.
Detailed explanation-2: -Terrestrial planets (Earth sized and smaller) are rocky worlds, composed of rock, silicate, water and/or carbon.
Detailed explanation-3: -The four planets closest to the Sun-Mercury, Venus, Earth, and Mars-are the inner planets or terrestrial planets (Figure below). They are similar to Earth. All are solid, dense, and rocky. None of the inner planets has rings.
There is 1 question to complete.