Magnet Force

True or False: All metals stick to magnets.

• True
• False

What subatomic particle causes magnetism in an atom? 

• protons
• neutrons
• electrons
• nucleus

Which poles repel?

• north and south
• south and north
• south and south

Bob made an electromagnet but it was very weak.  How can he make it stronger?

• take away a d-cell
• wrap the wire loosely
• use thicker wire
• use less winds

Which metals are attracted to magnets? 

• iron, nickel, cobalt
• gold, silver, platinum
• copper, magnesium, aluminum

How is Earth's magnetic field similar to that of a magnet?

• It's shaped like a horseshoe.
• It has north and south poles.
• It is made plastic.
• It is hundreds of miles long.

This substance is

• magnetized
• unmagnetized
• positively charged
• negatively charged

You know this substance is magnetized because

• all the domains have right angles
• the arrows are drawn in red
• the domains are aligned
• the domains are random

_______________________ is the invisible force that flows through a magnet.  

• repel
• copper
• attraction
• magnetism

This large crane magnet functions only when the electrical current is ON.  The crane magnet is an example of what type of magnet?

• NIB Magnet
• Ceramic Magnet
• Electromagnet
• funnel magnet