UNIVERSE
SOLAR STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They are all made of gaseous material.
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They are the largest planets in Earth’s solar system.
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They have very cold surface temperatures compared to Pluto.
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They are all made of rocky material.
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Detailed explanation-1: -In many ways, all the rocky planets are similar. They all have a solid rocky crust, some form of mantle, and a core.
Detailed explanation-2: -Earth and the other three inner planets of our solar system (Mercury, Venus and Mars) are made of rock, containing common minerals like feldspars and metals like magnesium and aluminum. So is Pluto. The other planets are not solid. Jupiter, for instance, is made up mostly of trapped helium, hydrogen, and water.
Detailed explanation-3: -Unlike the outer planets, which have many satellites, Mercury and Venus do not have moons, Earth has one, and Mars has two. Venus and Mercury do not have moons because they are closer to the Sun than Earth. Sun’s gravitational pull would make it difficult for any moon to remain in these planets’ orbit.
Detailed explanation-4: -It must orbit a star (in our cosmic neighborhood, the Sun). It must be big enough to have enough gravity to force it into a spherical shape. It must be big enough that its gravity cleared away any other objects of a similar size near its orbit around the Sun.
Detailed explanation-5: -Both planets orbit around the Sun. Scientists believe they both formed around the same time, 4.6 billion years ago. The cores of Mercury and Mars have similar compositions. Both planets have a rocky, solid surface. The atmospheres of both planets are very thin. More items •08-Jan-2023