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Questions and Answers
What happens to the sewing needle after rubbing it with a bar magnet multiple times in the same direction?
What happens to the sewing needle after rubbing it with a bar magnet multiple times in the same direction?
- It becomes electrically charged
- It gets magnetized (correct)
- It becomes rusty
- It becomes heavier
What is the significance of pinning a red cork ball to the South Pole and a white cork ball to the North Pole of the magnetized needle?
What is the significance of pinning a red cork ball to the South Pole and a white cork ball to the North Pole of the magnetized needle?
- To make it conduct electricity
- To create a decoration
- To identify the needle in a bowl of water
- To test its buoyancy (correct)
When two magnetized needles are floated side by side with like ends facing each other, how do they move?
When two magnetized needles are floated side by side with like ends facing each other, how do they move?
- They repel each other (correct)
- They rotate clockwise
- They sink to the bottom
- They attract each other
What happens when two magnetized needles are placed with unlike ends facing each other?
What happens when two magnetized needles are placed with unlike ends facing each other?
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How does the process of rubbing a needle with a bar magnet help in understanding its behavior?
How does the process of rubbing a needle with a bar magnet help in understanding its behavior?
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