Chapter 4 Exploring Magnets Class 6 Science Curiosity NCERT Solutions
Chapter 4 Exploring Magnets NCERT Solutions Class 6 Science
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Question 1. Fill in the blanks
(i) Unlike poles of two magnets ______ each other, whereas like poles _____ each other.
(ii) The materials that are attracted towards a magnet are called _____.
(iii) The needle of a magnetic compass rests along the _____ direction.
(iv) A magnet always has _____ poles.
Answer
(i) Unlike poles of two magnets attract each other, whereas like poles repel each other.
(ii) The materials that are attracted towards a magnet are called magnetic materials.
(iii) The needle of a magnetic compass rests along the north-south direction.
(iv) A magnet always has two (North and South) poles.
Question 2. State whether the following statements are True (T) or False (F).
(i) A magnet can be broken into pieces to obtain a single pole. [ ]
(ii) Similar poles of a magnet repel each other. [ ]
(iii) Iron filings mostly stick in the middle of a bar magnet when it is brought near them. [ ]
(iv) A freely suspended bar magnet always aligns with the north-south direction. [ ]
Answer
(i) False
(ii) True
(iii) False
(iv) True
Question 3. Column I shows different positions in which one pole of a magnet is placed near that of the other. Column II indicates the resulting interaction between them for different situations. Fill in the blanks.
Answer
|
Column I |
Column II |
|
N – N |
Repulsion |
|
N – S |
Attraction |
|
S – N |
Attraction |
|
S – S |
Repulsion |
Question 4. Atharv performed an experiment in which he took a bar magnet and rolled it over a heap of steel U-clips (Fig. 4.15).
According to you, which of the options given in Table 4.3 is likely to be his observation?
The strength of a magnet is more at the ends. So, the ends of the magnet have more iron fillings attached to it. Therefore, option (i) 10,2,10 is correct as it has more iron filling attracted to the end of the magnet.
Question 5. Reshma bought three identical metal bars from the market. Out of these bars, two were magnets and one was just a piece of iron. How will she identify which two amongst the three could be magnets (without using any other material).
Answer
Identifying Magnets- Reshma can identify the magnets by using their property of repulsion. Two magnets will repel each other when like poles are brought near, while an iron bar will be attracted by both poles of a magnet as it is a magnetic substance.
Question 6. You are given a magnet which does not have the poles marked. How can you find its poles with the help of another magnet which has its poles marked?
Answer
Finding Poles of a Magnet: Use another marked magnet to find the poles. The North pole of the marked magnet will attract the South pole and repel the North pole of the unmarked magnet.
Question 7. A bar magnet has no markings to indicate its poles. How would you find out near which end its North pole is located without using another magnet?
Answer
Identifying North Pole: A freely suspended bar magnet will always align with the Earth's North-South direction. The end pointing North is the North pole.
Question 8. If the earth is itself a magnet, can you guess the poles of earth’s magnet by looking at the direction of the magnetic compass?
Answer
Earth as a Magnet: The Earth behaves like a giant magnet, and by looking at a compass, we can guess that the geographic North corresponds to the Earth's magnetic South pole.
Question 9. While a mechanic was repairing a gadget using a screw driver, the steel screws kept falling down. Suggest a way to solve the problem of the mechanic on the basis of what you have learnt in this chapter.
Answer
Magnetizing Screwdriver: The mechanic can magnetize the screwdriver by rubbing it with a magnet several times in one direction, allowing it to attract screws.
Question 10. Two ring magnets X and Y are arranged as shown in Fig. 4.16. It is observed that the magnet X does not move down further. What could be the possible reason? Suggest a way to bring the magnet X in contact with magnet Y, without pushing either of the magnets.
Answer
Ring Magnets Interaction: Magnet X stays suspended because the like poles (North-North or South- South) are facing each other, causing repulsion. To bring them together, flip one magnet so that unlike poles (North-South) attract.
Question 11. Three magnets are arranged on a table in the form of the shape shown in Fig. 4.17. What is the polarity, N or S, at the ends 1, 2, 3, 4 and 6 of the magnets? Polarity of one end (5) is given for you.
Answer
Determining Polarity of Bar Magnets: By observing the interactions and using the known polarity of one end, the remaining ends can be deduced based on attraction or repulsion.
- 1- N
- 2- S
- 3- N
- 4- S
- 5- N
- 6- S