Question

1. Which two elements are mainly found in the inner and outer core?
A. Fe and Ni
B. Fe and Si
C. Ni and Si
D. Ni and C

2. Why is the inner core solid?
A. Even though it is as hot as the surface of the Sun, it has immense pressure upon it
B. Iron and Nickel are only solid
C. Nickel is not dense
D. It is made up mostly of granite and basalt.

Answer 1

Because it takes a lot of work to make a core solid

Answer 2

(1) The two elements are mainly found in the inner and outer core are iron and nickel.

(2) The inner core of the Earth is solid because it is composed of high density, or heavy materials  such as iron and nickel minerals.

(1)

Earth core is made of two layers:

• the outer core; found within the boundaries the mantle,
• and the inner core.

The two elements found within the inner and outer core of Earth include;

• iron and nickel.

(2)

The inner core of the Earth is solid because it is composed of high density, or heavy materials  such as iron and nickel minerals.

Thus, we can conclude that the two elements are mainly found in the inner and outer core are iron and nickel. The inner core of the Earth is solid because it is composed of high density, or heavy materials  such as iron and nickel minerals.

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