Multiple choice

What is true about the inner most core of the earth?

  1. It has a radius of about 3500km

  2. It has very high temperature and pressure

  3. It is made up of Nickel and Ferrous, so called NIFE

  4. All of these

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

The Earth's core has a radius of approximately 3500 km and experiences extreme temperatures and pressures. It is primarily composed of nickel (Ni) and iron (Fe), which is why it is commonly referred to as the NIFE layer. Therefore, all the given statements are correct.