1. Must have two poles (North and South). Must exert a magnetic force on other magnets or magnetic materials.
2. Repulsion between the middle and right magnets (S-S and N-N facing). Attraction between the left and middle magnets (S-N facing).
3. A) Field lines emerge from North pole of left magnet, curve to enter South pole of right magnet. B) Field lines emerge from North pole of top magnet, curve down to enter South pole of bottom magnet; field lines also emerge from North pole of left magnet, curve to enter its own South pole.
4. a) Left compass: needle points right (toward S). Right compass: needle points left (toward N). b) Top compass: needle points left (toward S). Bottom compass: needle points left (toward S). Left compass: needle points right (toward N).
Parent Tip: Review the logic above to help your child master the concept of magnetic field worksheet.
