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Which layer of the Earth is solid and composed mainly of iron and nickel? (2021)

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Question: Which layer of the Earth is solid and composed mainly of iron and nickel? (2021)

Options:

  1. Crust
  2. Mantle
  3. Outer Core
  4. Inner Core

Correct Answer: Inner Core

Exam Year: 2021

Solution: 

The Inner Core is solid and composed mainly of iron and nickel, despite the high temperatures.

Which layer of the Earth is solid and composed mainly of iron and nickel? (2021)

Practice Questions

Q1
Which layer of the Earth is solid and composed mainly of iron and nickel? (2021)
  1. Crust
  2. Mantle
  3. Outer Core
  4. Inner Core

Questions & Step-by-Step Solutions

Which layer of the Earth is solid and composed mainly of iron and nickel? (2021)
  • Step 1: Understand that the Earth has different layers.
  • Step 2: Identify the layers of the Earth: crust, mantle, outer core, and inner core.
  • Step 3: Know that the inner core is the deepest layer of the Earth.
  • Step 4: Learn that the inner core is solid.
  • Step 5: Remember that the inner core is mainly made of iron and nickel.
  • Step 6: Acknowledge that even though it is very hot, the inner core remains solid due to high pressure.
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