Subject- Science ( Semi English)
Std-6th. J.V.Sonambe.
Sub Teacher- Deepak Bhalerao, sir
SELF STUDY SERIES
विद्यार्थी मित्रांनो,
खाली दिलेला स्वाध्याय नीट वाचा व आपल्या पुस्तकात पाहून उत्तरे लिहा.कोणतेही गाईड व व्यवसाय पुस्तिकांचा आधार घेऊ नका.
1) The material to which objects made from iron ,nickel, Cobalt etc get attracted is called a .......
2) The materials that stick to a magnet are called.....e.g iron Cobalt, nickel,iron filings,pins
3) The materials that do not stick to a magnet are called......e.g a mixture of sand, pieces of paper,saw dust
4) Magnetite is a ...... magnet
5) The rock was named magnetite after the .......the Shephard.
6) Today magnets are used in many machines and gadgets or devices they are all........ magnets
7) Write the names of different shapes of magnets in everyday use
i) Bar magnets, ii)disc magnets iii) horseshoe magnets,iv) ....v).....vi ).....
8) Characteristics of a magnet
i ) A magnet always settles in the ....... direction
ii) The magnetic force is concentrated at the .... ends or poles of a magnet
iii) If a magnet is divided into two parts two .....magnets are formed it means that the two poles of a magnet cannot be separated from each other
iv) A magnetic material acquires magnetism when placed near a magnet this magnetism is called.... magnetism
v) There is..... between like poles of a magnet while there is..... between the opposite poles
9) Magnetism is produced in the nail due to the electric current. when it is put off the magnetism vanishes. such a magnet is called an.......
10) An..... is used in instruments such as door bell and a crane
11) The British scientist ......developed the technique of producing electricity with the help of a magnet
12) The properties of electromagnetism and repulsion between magnets are used in a ..... train
13) There is a strip of ...... material in ATM cards, credit cards
14) Magnetic materials are also used to store..... in the hard disc of a computer, an audio or video tape, etc
15) Magnetism gets destroyed when a ...... is heated thrown locked about or broken into pieces.
16) The bar of soft or pure iron protects a magnet.therefore such a bar is called a.......
17) We have to take precautions while working with.... . or with important devices .we must use them under the guidance of our......
18) If a bar magnet is cut into equal pieces by cutting it at right angles to its Axis at two places 3 bar magnets are formed and a total of..... poles are formed.
19) When magnetic material is taken close to a magnet the material acquires...... magnetism
20) A magnet remains study in a....... direction
Answer sheet
1) magnet 2) magnetic material 3) non- magnetic material 4) natural magnet
5) Magnets 6) man-made magnets
7) ring-shaped magnets, cylindrical magnets,small button magnets
8) north-south direction,two ends, independent magnets,induced magnetism, repulsion, attraction,
9) electromagnet 10) electromagnet
11) Michael Faraday 12) maglev train
13) magnetic material 14) data 15) magnet 16) magnet keeper 17) electricity,elders 18) 6 19) induced 20) north-south
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