Checkpoint: things, poles, cutting, push and pull

A magnet is near copper wire, an iron nail and a pencil. Which one does it pull?

• The copper wire, because copper is a metal
• The iron nail
• All three

Where is the pull of a bar magnet strongest?

• In the middle
• The same everywhere
• At the two ends

A bar magnet is cut into two pieces. What do the pieces have?

• Neither piece has poles
• One piece has only N. The other has only S
• Each piece has its own N and its own S

Two magnets snap together. Which poles face each other?

• It does not matter
• Opposite poles, N and S
• Matching poles, like N and N