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Short & Long Questions: Magnets | Eureka Plus Class 6: Book Solutions, Notes & Worksheets PDF Download

Short Answer Questions

Q1 What did Magnes, the shepherd from Greece, discover?
Ans: Magnes discovered magnets when a stick with an iron cap attracted a piece of rock.

Q2: Name three magnetic materials mentioned in the chapter.
Ans: Iron, cobalt, and nickel are magnetic materials.

Q3: What are the two poles of a magnet called?
Ans: The two poles of a magnet are called the north pole (N) and the south pole (S).

Q4: How does a magnetic compass help in finding directions?
Ans: The needle in a compass points in the north-south direction, aligning with the Earth's magnetic field.

Q5: Can magnets attract non-metallic objects? Explain.
Ans: No, magnets attract only metallic objects, not non-metallic ones.

Long Answer Questions

Q1: Explain the directive property of a magnet. How does it relate to a compass?
Ans: The directive property of a magnet is its ability to align in the north-south direction. A compass uses this property, as the needle, being a magnet, points north-south due to Earth's magnetic force.

Q2: Describe the interaction of magnets. What happens when like poles are brought close? What about unlike poles?
Ans: Like poles repel each other, moving away. Unlike poles attract, moving closer to each other.

Q3: How can an ordinary iron needle become a temporary magnet? Explain the touch-and-stroke method.
Ans: Stroking a magnet on an iron needle in one direction aligns its molecules, making it a temporary magnet through the touch-and-stroke method.

Q4: Why is it said that the two poles of a permanent magnet cannot be separated even by cutting?
Ans: Cutting a magnet into pieces results in each piece becoming a separate magnet, each with its north and south pole.

Q5: Discuss the uses of magnets mentioned in the chapter. Provide at least three examples.
Ans: Magnets are used in compasses, toys, telephones, doorbells, headphones, televisions, digital cameras, computers, refrigerators, and in credit/debit card strips. In industries, magnets are used to separate metal objects for recycling.

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FAQs on Short & Long Questions: Magnets - Eureka Plus Class 6: Book Solutions, Notes & Worksheets

1. What are magnets?
Ans. Magnets are objects that produce a magnetic field around them. They attract certain metals like iron, nickel, and cobalt.
2. How do magnets work?
Ans. Magnets work by aligning the magnetic domains in the material they interact with. This alignment creates a magnetic field, which can attract or repel other magnets or magnetic materials.
3. What are the different types of magnets?
Ans. There are different types of magnets, including permanent magnets, temporary magnets, electromagnets, and natural magnets. Permanent magnets retain their magnetism, temporary magnets lose their magnetism after a certain period, electromagnets are made by passing an electric current through a coil of wire, and natural magnets are naturally occurring rocks or minerals with magnetic properties.
4. What are the uses of magnets?
Ans. Magnets have various uses in our daily lives. They are used in compasses to determine directions, in electric motors and generators, in speakers, in MRI machines, and in magnetic storage devices like hard drives.
5. Can magnets lose their magnetism?
Ans. Yes, magnets can lose their magnetism over time. This can happen due to heat, mechanical shock, or exposure to a strong magnetic field in the opposite direction. However, some magnets, like permanent magnets, retain their magnetism for a long time unless subjected to these factors.
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