Question 7
Work in pairs.
You will need: bar magnet; horseshoe magnet (optional); piece of A4 size paper; piece of thick card, not thicker than the thickness of the magnet; iron filings.
Safety: Be careful not to get the iron filings on your skin. They can be sharp and get stuck in your skin. Be careful not to get the iron filings on the magnet. They are very difficult to remove and other people will get the iron filings on their skin.
Method
1. Cut a hole in the middle of the thick card, just large enough to put the bar magnet in.
2. Put the bar magnet into the hole so it lies flat in the card. The card is to support the paper and keep the paper level.
3. Put the paper on top of the card so the magnet is under the middle of the paper.
4. Gently and evenly sprinkle the iron filings over the paper. Tap the paper gently to allow the iron filings to move into position.
You should see a pattern like the one in the picture.
When you have finished, carefully lift the paper vertically away from the magnet. Bend the paper to form a slight ‘U’ shape and use this as a channel to pour the iron filings back into the container.
You will need: bar magnet; horseshoe magnet (optional); piece of A4 size paper; piece of thick card, not thicker than the thickness of the magnet; iron filings.
Safety: Be careful not to get the iron filings on your skin. They can be sharp and get stuck in your skin. Be careful not to get the iron filings on the magnet. They are very difficult to remove and other people will get the iron filings on their skin.
Method
1. Cut a hole in the middle of the thick card, just large enough to put the bar magnet in.
2. Put the bar magnet into the hole so it lies flat in the card. The card is to support the paper and keep the paper level.
3. Put the paper on top of the card so the magnet is under the middle of the paper.
4. Gently and evenly sprinkle the iron filings over the paper. Tap the paper gently to allow the iron filings to move into position.
You should see a pattern like the one in the picture.
When you have finished, carefully lift the paper vertically away from the magnet. Bend the paper to form a slight ‘U’ shape and use this as a channel to pour the iron filings back into the container.
