Multiple choice

Which of the following statements is correct?

  1. The outer core is in a solid state while the inner core is in a liquid state.

  2. The core is made up of very heavy material mostly constituted by nickel and iron.

  3. The centre of the earth is at 5,300 km.

  4. Both 1, 2 and 3 are all correct.

  5. Both 1, 2 and 3 are all incorrect.

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This statement is correct.