A scientist is given a sample of earth and discovers that it is almost entirely iron. This sample most likely came from the _____.
A) core
B) outer mantle
C) inner mantle
D) asthenosphere
E) lithosphere

Question

Quizplus · Accepted Answer

The core is composed mainly of iron and nickel, so a sample of earth that is almost entirely iron is likely to have come from the core. The other layers of the earth have different compositions, with the mantle being composed mainly of silicates and the lithosphere being composed of a mixture of rocks and minerals.

A Scientist Is Given a Sample of Earth and Discovers