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ASVAB · Earth and Space Science

What is the innermost layer of the Earth called?

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Correct answer

Core

  1. A Crust
  2. B Core
  3. C Mantle
  4. D Atmosphere

Why this is the answer

The CORE is the innermost layer of the Earth. ASVAB General Science includes earth science. Earth's layers from outside in: CRUST (thin outer layer where we live); MANTLE (thick middle layer of hot, semi-solid rock); CORE (innermost — divided into a liquid OUTER CORE and a solid INNER CORE, composed mostly of iron and nickel, extremely hot). The Earth's core generates the magnetic field. Knowing Earth's layered structure (crust, mantle, core) is commonly tested earth science.
Source: ASVAB General Science — Earth's Layers

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About this topic: Earth and Space Science

Earth and space science covers geology (rock types, plate tectonics), weather and the atmosphere, the water cycle, and astronomy — the solar system, moon phases, eclipses and the seasons. This is one of 13 General Science questions on earth and space science, each with a full explanation on a single study page.

New to this exam? Our ASVAB exam guide explains the format, scoring, and how to prepare.

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