Multiple choice

Which of the following statements is/are correct?

  1. Average density of the earth is 5.5 g/cm3.
  2. Average density of the core of the earth is 11.0 g/cm3.
  3. Average density of the earth's crust is 2.7 to 3.3 g/cm3.

  1. All 1, 2 and 3

  2. Only 1 and 2

  3. Only 2 and 3

  4. Only 2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Density of the layers of the earth: Continental crust: 2.7 to 3.0 g/cm3 Oceanic crust: 3.0 to 3.3 g/cm3 Mantle (silicates): 3.3 to 5.7 g/cm3 Outer core (liquid): 9.9 to 12.2 g/cm3 Inner core (solid): 12.6 to 13.0 g/cm3 Average density of the earth: 5.5 g/cm3

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