A temporary magnet can be made by stroking a magnetic material, like iron, with a permanent magnet in one direction. This aligns the material’s magnetic domains temporarily, giving it magnetic properties.
Category: Class 6 Science
NCERT Solutions and Important Questions for class 6 Science for CBSE exams 2020-2021.
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Temporary magnets lose their magnetism quickly once the external magnetic field is removed, like soft iron. Permanent magnets, like bar magnets, retain their magnetism over time without needing an external field.
When seawater is exposed to sunlight and air, the water evaporates completely, leaving behind a solid mixture that contains salts, including common salt. Class 6 Science NCERT Chapter 9
When you cut a magnet in half, each piece becomes a new magnet with its own north and south poles. This occurs because the magnetic domains realign, ensuring that both pieces have opposite poles.
The law of magnetic poles states that like poles repel and unlike poles attract. This means that a north pole will attract a south pole but repel another north pole, and vice versa.
Magnetic poles are the regions at the ends of a magnet where the magnetic force is strongest. Every magnet has two poles: a north pole and a south pole, which are responsible for magnetic interactions.
A magnetic field can be visualized using iron filings or a compass. Iron filings sprinkled around a magnet align along the field lines, while a compass needle aligns itself with the magnetic field direction.
Salt is obtained by keeping seawater in shallow pits and exposing it to sunlight and air. The water evaporates, leaving behind a solid mixture, from which common salt is further purified. NCERT Science Textbook Curiosity Science Session 2024-2025.
A magnetic field is an invisible force field around a magnet where magnetic forces are exerted. It is represented by field lines that emerge from the north pole and enter the south pole of the magnet.
Magnets attract or repel each other based on their poles. Opposite poles (north and south) attract, while like poles (north-north or south-south) repel. This behavior is due to the interaction of their magnetic fields.