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:

• Option 1: Earth's core isn't composed of magnets; it has magnetic properties due to its composition and movement.
• Option 2: Earth's core (inner and outer) is mainly iron and nickel. The movement of the liquid outer core (with iron and nickel) generates the magnetic field via the geodynamo effect. This explains the magnetic field.
• Option 3: The outer core is liquid, not solid; the inner core is solid.
• Option 4: The inner core is solid; the outer core is liquid and moving.

Answer:

B. Earth's core is comprised of iron and nickel