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Earth's Cores

Across
The action of the metals in the outer core creates Earth's magnetic field.
A huge solid, metal ball in the center of the Earth.
This is the measure of an object's warmth or coldness.
Down
The incredible ____ causes the metal in the inner core to remain solid.
The liquid layer surrounding Ear's inner core.
Flowing like water.
Earth's inner core is mainly made of this metal.