General Knowledge
Easy
Question
Which element is the most abundant in the Earth's crust?
A
Iron
B
Oxygen
✓ Official correct answer
C
Silicon
D
Aluminum
Community credibility
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A
Iron
No member explanations yet for this option.
B
Oxygen
No member explanations yet for this option.
C
Silicon
No member explanations yet for this option.
D
Aluminum
No member explanations yet for this option.
Explanation
Oxygen makes up approximately 46.6% of the Earth's crust by weight, primarily in combination with other elements to form various minerals. Silicon is the second most abundant, followed by Aluminum and Iron.