NCERT Class 6th Science Chapter 10 Fun with Magnets Question Answers
𝗤𝗨𝗜𝗭𝗘𝗧
NCERT Class 6th Science Chapter 10 Fun with Magnets Question Answers
1. Fill in the blanks:
(i) Artificial magnets are made in different shapes such as bar magnets, horseshoe magnets, and cylindrical magnets.
(ii) The materials which are attracted towards a magnet are called magnetic materials.
(iii) Paper is not a magnetic material.
(iv) In olden days, sailors used to find direction by suspending a piece of lodestone.
(v) A magnet always has two poles.
2. State whether the following statements are true or false:
(i) A cylindrical magnet has only one pole. False.
Explanation: All magnets, regardless of shape, have two poles: a North and a South pole.
(ii) Artificial magnets were discovered in Greece. False.
Explanation: Natural magnets, like magnetite, were discovered in Greece.
(iii) Similar poles of a magnet repel each other. True.
Explanation: Like poles (North-North or South-South) repel, while opposite poles attract.
(iv) Maximum iron filings stick in the middle of a bar magnet when it is brought near them. False.
Explanation: Iron filings mostly stick to the ends (poles) of the magnet, not the middle.
(v) Bar magnets always point towards the North-South direction. True.
Explanation: When freely suspended, a bar magnet aligns itself with the Earth's magnetic field, pointing in the North-South direction.
(vi) A compass can be used to find East-West direction at any place. False.
Explanation: A compass needle points in the North-South direction, from which East-West directions can be inferred.
(vii) Rubber is a magnetic material. False.
Explanation: Rubber is non-magnetic and is not attracted to magnets.
3. It was observed that a pencil sharpener gets attracted by both the poles of a magnet although its body is made of plastic. Name a material that might have been used to make some part of it.
Pencil Sharpener and Magnet Attraction:
A pencil sharpener might get attracted by both poles of a magnet if it contains a part made of iron or another magnetic material. While the body of the sharpener is made of plastic (a non-magnetic material), the blade or another internal component could be made of iron, which is magnetic.
4. Column I shows different positions in which one pole of a magnet is placed near that of the other. Column II indicates the resulting action between them for each situation. Fill in the blanks.
5. Write any two properties of a magnet.
Two Properties of a Magnet:
- Magnetic Attraction: A magnet attracts materials made of iron, nickel, and cobalt.
- Directional Property: When freely suspended, a magnet always aligns itself in the North-South direction.
6. Where are poles of a bar magnet located?
Location of Poles on a Bar Magnet:
The poles of a bar magnet are located near its two ends. These are the points where the magnetic force is the strongest.
7. A bar magnet has no markings to indicate its poles. How would you find out near which end is its north pole located?
Identifying the North Pole of an Unmarked Bar Magnet:
To find the North Pole of an unmarked bar magnet, suspend the magnet freely using a thread. The end that points towards the geographic north direction is the North Pole of the magnet.
8. You are given an iron strip. How will you make it into a magnet?
Making a Magnet from an Iron Strip:
To make a magnet from an iron strip:
- Place the iron strip on a flat surface.
- Take a bar magnet and rub one of its poles along the length of the iron strip in one direction only, from one end to the other.
- Lift the magnet off the strip and repeat the process several times.
- After repeated rubbing, the iron strip will become magnetized.
9. How is a compass used to find directions?
Using a Compass to Find Directions:
A compass contains a small magnetic needle that is free to rotate. The needle aligns itself with the Earth's magnetic field, pointing towards the magnetic north and south. By observing the direction in which the needle points, one can determine the North-South direction, and by extension, the East-West direction.
10. A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Affect observed in each case is stated in Column I. Possible reasons for the observed affects are mentioned in Column II. Match the statements given in Column I with those in Column II.
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