What is the composition of the Earth, and how is it structured?
Understand the Problem
The question involves discussing the composition and characteristics of the Earth, including its shape and the materials it is made of.
Answer
Earth is composed of crust, mantle, and core, mostly iron, oxygen, silicon, and magnesium.
The Earth consists of the crust, made of solid rock and thin layers like oceanic and continental crusts; the mantle, making up about 68% of Earth's mass and composed of silicate minerals; and the core, mostly iron with a solid inner core and a liquid outer core.
Answer for screen readers
The Earth consists of the crust, made of solid rock and thin layers like oceanic and continental crusts; the mantle, making up about 68% of Earth's mass and composed of silicate minerals; and the core, mostly iron with a solid inner core and a liquid outer core.
More Information
The Earth's structure reflects its dynamic nature; the crust supports life, the mantle drives tectonic activity, and the core generates Earth's magnetic field.
Tips
A common mistake is confusing the lithosphere with the crust. The lithosphere includes both the crust and the upper mantle.
Sources
- The Earth's Structure - Geological Survey Ireland - gsi.ie
- Earth's structure and composition | Britannica - britannica.com
- Earth Structure - National Geographic Education - education.nationalgeographic.org
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