Which of the following is correct regarding Earth's inner core?
A)It has a density of 133.5 grams • cm-3.
B)It is liquid iron in composition.
C)It is the source of Earth's magnetic field.
D)It is about 1230 km thick.

Question

Quizplus · Accepted Answer

Earth's inner core is solid iron and nickel with a density of around 13 grams • cm-3. However, it is believed to be the source of Earth's magnetic field due to the convection of liquid iron in the outer core surrounding it. The inner core is approximately 1220 km in diameter, but only about 240 km thick.

Which of the Following Is Correct Regarding Earth's Inner Core