Sometimes the north and south poles of atoms in a material will line up. What is the term for the region where this occurs?

1. a domain

2. ferromagnetic

3. magnetic field

4. magnetic pole

1. a domain

Explanation:

Magnetic domains are regions of matter where north and south poles of atoms line up in the same direction. Only certain materials, called ferromagnetic materials, can be magnetized. They include iron, cobalt, and nickel. Materials that have been magnetized may become temporary or permanent magnets.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y