Question

What does the gravity field reveal about the winds, composition, and phase changes of the interior?
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Answer 1

Explanation:

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The solid, inner core of iron has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy. ... The inner core spins at a different speed than the rest of the planet. This is thought to cause Earth's magnetic field.

Answer 2

has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy. ... The inner core spins at a different speed than the rest of the planet. This is thought to cause Earth's magnetic field.

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