📌 Key Concepts
✦ Magnets attract objects made of iron, nickel, cobalt (magnetic materials)
✦ Every magnet has two poles: North (N) and South (S)
✦ Like poles repel; Unlike poles attract
✦ A freely suspended magnet always points North-South
✦ Magnetic materials: iron, nickel, cobalt; Non-magnetic: wood, plastic, glass
✦ A compass uses a small magnet to find direction
✦ Magnets should be stored with keepers and kept away from electronic devices
✦ If a magnet is broken, each piece becomes a complete magnet with N and S poles
Q2 Write True or False.
ANSWER(i) A magnet can attract wooden objects. FALSE
Wood is non-magnetic.
(ii) Like poles of magnets attract each other. FALSE
Like poles repel; unlike poles attract.
(iii) A compass needle is a small magnet. TRUE
(iv) A broken magnet loses its magnetism. FALSE
Each piece becomes a complete magnet with both N and S poles.
Q3 Classify as magnetic or non-magnetic: Iron nail, Plastic ruler, Steel spoon, Glass bead, Nickel coin, Rubber band, Cobalt ring, Paper clip.
ANSWER| Magnetic | Non-Magnetic |
|---|
| Iron nail, Steel spoon, Nickel coin, Cobalt ring, Paper clip (iron/steel) | Plastic ruler, Glass bead, Rubber band |
Q4 What happens when two magnets are brought close to each other?
ANSWERCase 1: When unlike poles (N-S or S-N) face each other → they attract.
Case 2: When like poles (N-N or S-S) face each other → they repel.
Remember
Unlike poles attract, Like poles repel.
Q6 What happens when a magnet is broken into two pieces?
ANSWEREach piece becomes a complete magnet with its own North and South pole. We cannot separate the two poles of a magnet — poles always exist in pairs. No matter how many times you break a magnet, each piece will always have both poles.