Ace the Natural Science CLEP 2026 – Unleash Your Inner Scientist!

Question: 1 / 400

What is the most abundant element in the Earth’s crust?

Oxygen

Oxygen is the most abundant element in the Earth’s crust, making up about 46.6% of its mass. This is because oxygen is a major component of the most common minerals found in the crust, such as silica and feldspar.

Iron is the second most abundant element, making up about 27.7% of the crust's mass. While this is still a significant amount, it is much less than oxygen.

Carbon is present in the Earth's crust, but in much lower amounts, typically less than 0.2% of the crust's mass. It is mainly found in carbonate minerals and organic matter.

Hydrogen is not considered to be a major component of the Earth's crust, as it is a gas at normal crustal temperatures and does not form stable minerals.

Get further explanation with Examzify DeepDiveBeta

Iron

Carbon

Hydrogen

Next Question

Report this question

Download Natural Science CLEP Prep Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy