Track quiz
Before the quiz, a cheat-sheet of the whole track.
| Idea | What to remember |
|---|---|
| What a magnet pulls | Iron, nickel, cobalt and steel. Not every metal. |
| Poles | Every magnet has two. The pull is strongest at the ends. |
| Cutting a magnet | Each piece gets its own N and S. |
| Push or pull | Opposite poles pull. Matching poles push. |
| Distance | The pull crosses a gap and passes through thin things. |
| Uses | Fridge door, knife strip, pencil box, compass. |
| Making and losing | Stroking steel makes a magnet. Drops, hits and heat weaken it. |
| The compass | A free magnet settles in the north-south line. |
| Safety | Keep magnets away from phones, TVs and computers. |
A magnet is near an aluminium spoon and an iron nail. What happens?
Where does a bar magnet pull hardest?
A bar magnet is cut into three pieces. How many poles are there now?
Two magnets push each other away. Which poles face each other?
A magnet under a table moves a clip on top. Nothing touches. Why does it work?
Which thing has a magnet inside?
You stroke a steel needle with a magnet, always the same way. What happens?
You spin a free magnet and let go. Where does it settle?
Which is a safe way to keep a magnet?
Chapter 4 of your NCERT book is Exploring Magnets. You have tried each idea here.
Next: Measurement of Length and Motion. Learn to measure well.