UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Titan
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Uranus
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Mercury
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Pluto
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Detailed explanation-1: -The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth’s terra firma.
Detailed explanation-2: -A terrestrial planet, telluric planet, solid planet, or rocky planet, is a planet that is composed primarily of silicate rocks or metals. Within the Solar System, the terrestrial planets accepted by the IAU are the inner planets closest to the Sun: Mercury, Venus, Earth and Mars.
Detailed explanation-3: -Terrestrial planets (Mercury, Venus, Earth, and Mars) are differentiated into three layers: a metallic core, a silicate shell (mantle and crust), and a volatile envelope of gases, ices, and, for the Earth, liquid water.
Detailed explanation-4: -Mercury is the second densest planet, after Earth. It has a large metallic core with a radius of about 1, 289 miles (2, 074 kilometers), about 85 percent of the planet’s radius. There is evidence that it is partly molten or liquid.