Multiple choice

What layers of Earth are solid?

  1. Inner Core and Outer Core

  2. Mantle and Outer Core

  3. Mantle and Inner Core

  4. Inner Core and Crust
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The crust is solid, and the inner core is solid due to extreme pressure. The mantle is semi-solid (plastic), and the outer core is liquid.

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