UNIVERSE
PLANETARY INTERIORS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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nitrogen and potassium
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oxygen and silicon
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hydrogen and oxygen
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potassium and oxygen
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Detailed explanation-1: -The two most abundant elements in the earth’s crust are Oxygen and Silicon.
Detailed explanation-2: -Oxygen tops the list in terms of abundance, with the planet’s shell being composed of almost 47% of this nonmetallic chemical element. Silicon posts a second-place ranking at nearly 28% by weight. Add these two elements together, and you get silicates.
Detailed explanation-3: -More than 90 percent of Earth’s mass is composed of iron, oxygen, silicon, and magnesium, elements that can form the crystalline minerals known as silicates. Nevertheless, in chemical and mineralogical composition, as in physical properties, Earth is far from homogeneous.
Detailed explanation-4: -From mud and clay to diamonds and coal, Earth’s crust is composed of igneous, metamorphic, and sedimentary rocks. The most abundant rocks in the crust are igneous, which are formed by the cooling of magma. Earth’s crust is rich in igneous rocks such as granite and basalt.