SOLAR SYSTEM

UNIVERSE

SOLAR SYSTEM FORMATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are the inner planets made of (primarily)?
A
hydrogen and helium
B
rock
C
ice
D
gas
Explanation: 

Detailed explanation-1: -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.

Detailed explanation-2: -Terrestrial planets (Earth sized and smaller) are rocky worlds, composed of rock, silicate, water and/or carbon.

Detailed explanation-3: -The inner planets Mercury, Venus, Earth, and Mars are made of rocky material; the outer planets are composed of “gases."

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