Multiple choice

Which of the following is not true regarding the mantle?

  1. Earth's mantle extends to a depth of almost 2900 km.

  2. It is the thickest layer of Earth.

  3. It is composed of silicate rocks that are rich in iron and magnesium.

  4. All of the given statements are true.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The mantle extends to 2900 km, is the thickest layer, and is composed of silicate rocks rich in iron and magnesium. All statements are correct.

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