Question

Q.2 Very Short Answer Questions:
1.______ is an artificial magnet in a rectangular shape.
2. Nowdays magnet are made with ______.
3._______ is a navigation instrument.
4. Some rocks, minerals and meteorites are
natural magnets. True or false?
5. A magnet never loses its magnetism. True or
false?
6. Name the metal present in natural magnets.
7. Another name for a U-shaped magnet.
8. The process of losing magnetic properties by
a magnet.​

Answer 1

Answer:

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Explanation:

i) False; A magnet of any shape always has two poles: north pole and south pole.

(ii) False; Natural magnets were discovered in Greece.

(iii) True

(iv) False; Maximum iron filings stick at the two ends of the magnet as the magnetic strength is maximum at the ends or poles of a magnet.

(v) True

(vi) True; The needle of a magnetic compass always points towards the North−South direction. If the North−South direction is known, then the East−West direction can also be determined which is perpendicular to the compass needle.

(vii) False; Rubber does not get attracted by a magnet. Therefore, it is not a magnetic material.

Answer 2

Answer:

answer

Explanation:

1. bar magnet
2. ferromagnetic metals.
3. compass
4. true
5. true
6. • Iron.
7. • Nickel.
8. • Cobalt.
9. • Some alloys of rare earth metals
10. horseshoe magnet
11. Magnetized metal objects lose their magnetism if the objects become sufficiently hot. With increasing temperature, the atoms in a metal vibrate more energetically; eventually this causes the atoms to lose their magnetic alignment and any magnetic field the metal possessed.