UNIVERSE
SOLAR SYSTEM FORMATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The only planet with moon.
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The only planet where life is known to exist.
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The only planet with large amounts of liquid water on its surface.
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Earth is the largest and densest inner planet.
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Detailed explanation-1: -Instead, we just have a relatively heavy rocky, terrestrial planet: Earth, the heaviest world in our Solar System without a large gaseous envelope. Due to the power of its own gravitation, Earth is compressed by a few percent over what its density would have been without so much mass.
Detailed explanation-2: -Earth has the largest known solid surface. The outer planets are fluid to the core and the inner ones are smaller. Earth has a predominantly nitrogen atmosphere. The gas in outer planets is mostly hydrogen, and Venus and Mars have mostly carbon dioxide in their atmospheres.
Detailed explanation-3: -Mercury and Earth are the densest planets in the Solar System (Figure 13) with densities similar to the iron-rich mineral haematite. Saturn, the least dense planet in the Solar System on the other hand, has a density lower than that of water.
Detailed explanation-4: -Venus has a dense atmosphere composed of 96.5% carbon dioxide, 3.5% nitrogen-both exist as supercritical fluids at the planet’s surface-and traces of other gases including sulfur dioxide.