Of the elements in the Earth's crusts, ________ makes up the most of the Earth's crust by weight.
A) silicon (Si)
B) aluminum (Al)
C) oxygen (O)
D) iron (Fe)

Name: Of the elements in the Earth's crusts, ________ makes up the most of the Earth's crust by weight. A) silicon (Si) B) aluminum (Al) C) oxygen (O) D) iron (Fe)
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Question

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Oxygen (O) makes up about 46.6% of the Earth's crust by weight, while silicon (Si) is second at 27.7%. Aluminum (Al) is third at 8.1% and iron (Fe) is fourth at 5%.

Of the Elements in the Earth's Crusts, ________ Makes Up