Question

which statement about earths core helps explain earths magnetic field?
earths core is composed of magnets.
earths core is composed of iron and nickel.
the outer core is solid.
the inner core is liquid and moving.

Explanation:

Earth's magnetic field is generated by the movement of molten iron and nickel in the outer - core. Iron and nickel are ferromagnetic materials. The outer core is liquid and in motion, creating electric currents which in turn generate the magnetic field. Earth's core is not composed of magnets. The outer core is liquid and the inner core is solid.

Answer:

Earth's core is composed of iron and nickel.