Question

practice 5: the outer core
circle the correct characteristics for the outer core.
a. solid iron and nickel
b. 2,300 km thick
c. may cause earths magnetic field
d. liquid iron and nickel

Explanation:

The outer core is a liquid layer composed mainly of iron and nickel. It is about 2,300 km thick. The movement of the liquid iron and nickel in the outer core is thought to generate Earth's magnetic field. Option A is incorrect as the outer core is liquid, not solid.

Answer:

B. 2,300 km thick, C. May cause Earth's magnetic field, D. Liquid iron and nickel