A scientist collects a core sample from 60 km deep in Earth.

Which characteristic will she most likely observe in this sample?

The sample has high iron content.

The sample is very hot and liquefied.

The sample mainly consists of granite.

The sample has a very high density.

Answer: C

The correct answer is - The sample has a high iron content.

The iron is the most abundant material on our planet, and it's amount and total percentage becomes bigger with going in depth. So if we have a situation where a core sample from 60 km depth is examined, the first thing that will be noticeable, will be the high content of iron in the sample.