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Using Magnets to Find Directions

Fill in the b...

Question

Fill in the blanks with the correct words.
1. Only ..................... (magnetic/non-magnetic) materials are attracted by magnets.
2. Like poles of two magnets ..................... (attract/repel) each other.
3. A magnet that retains its properties for a very long period of time is called ..................... (electro/permanent) magnet.
4. A horseshoe magnet should be stored with a piece of ..................... (plastic/iron) across its poles.
5. A ......................................... (credit card/magnetic compass) is a devicer used to find directions.

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Solution

1.Only magnetic materials are attracted by magnets.
2. Like poles of two magnets repel each other.
3. A magnet that retains its properties for a very long period of time is called permanent magnet.
4. A horseshoe magnet should be stored with a piece of iron across its poles.
5. A magnetic compass is a device used to find directions.

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Similar questions

Q. Fill in the blanks with the appropriate word.
(a) If a bar magnet is hung by a thread tied at its centre, its north pole becomes steady in the direction of the ................ Pole of the earth.
(South, north, east, west)
(b) If a bar magnet is cut into equal pieces by cutting it at right angles to its axis at two places, ........... bar magnets are formed, and a total of ................ poles are formed.
(6,3,2)
(c) There is repulsion between the .......... poles of a magnet, and attraction between its ............ poles.
(opposite, like.)
(d) When magnetic material is taken close to a magnet, the material acquires ............... .
(permanent magnetism, induced magnetism)
(e) If a magnet attracts a piece of metal, that piece must be made of ............. .
(any other metal but iron, magnetic material or iron, non-magnetic material)
(f) A magnet remains steady in a .............. direction.
(east-west, north-south)

Q. poles, attracts, east-west, north-south like, opposite, repel, magnetic
Fill in the blanks in the following passage(s) from the words given above.

A magnet ........1......... small pieces of iron, nickel, cobalt. etc. The magnetic force of attraction is maximum in small regions near the ends of the magnet. These are called the ........2........of the magnet.
A freely suspended magnet always points in ......3...... direction. The end pointing towards north is called north seeking pole or north pole. The other end which points towards south is called south seeking pole or south pole. All magnets attract ...........4.......... poles of other magnets and also a few substances like iron, nickel and cobalt. Thus if an unknown substance is attracted by a magnet, we cannot be sure whether it is a magnet. But like poles of magnet ....,....5............ each other. Hence if there is repulsion between an unknown substance and a magnet, we can be sure that the unknown substance is a magnet. The substances which are attracted by magnets are called ......6...... substances.

Q. Fill in the blanks:
1. Materials which are attracted by magnets are called ............................. substances.
2. A magnet always comes to rest in the ............................. direction when suspended freely.
3. The regions on a magnet where the attraction power of the magnet is maximum are called ............................. of the magnet.
4. Like poles ............................. and unlike poles ............................. each other.
5. Artificial magnets are made in different shapes such as ............................. and ............................. .
6. Sailors use ............................. to find direction.
7. Paper is not a ............................. .
8. Magnetic poles always exist in ............................. .

Q. Which of the following statements are correct? Rewrite the incorrect ones correctly.
(a) A magnet will be attracted to the aluminium frame of a window.
(b) A magnet will not lose its magnetism even if it is repeatedly dropped on the floor.
(c) When a magnet is dipped into a box of paper clips, most of them will be seen sticking to the ends of the magnet.
(d) A magnet need not always have two poles.
(e) Magnetic poles that are alike attract each other.
(f) If a magnet is floated on a cork in water and balanced, one end will point east and the other end will point west.
(g) Both the ends of a solid bar are attracted to both poles of a magnet. The bar could be a magnet.
(h) Unlike magnetic poles attract each other.
(i) Iron can be used to make permanent magnets.
(j) Compasses work best when they are placed near iron objects.

Q. Assertion :The property of attracting magnetic substance is called magnetism. Reason: Magnetic poles never repel other pole.

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