DAV Class 6 Science Solution Chapter 13 Magnets
DAV School Books Class 6 Science Solution Chapter 13 Magnets all Question Answer. DAV Class 6 13th Chapter Magnets full Chapter explanation by expert teacher.
DAV School Books Class 6 Science Solution Chapter 13 Magnets:
(A) Fill in the blanks.
Answer: (1) non magnetic.
Answer: (2) permanent.
Answer: (3) magnetic poles.
Answer: (4) north pole.
Answer: (5) different.
(B) Write True or False for the following statements.
Answer: (1) True.
Answer: (2) False.
Answer: (3) True.
Answer: (4) False.
Answer: (5) False.
(C) Tick (✓) the correct option.
(1) The magnetic material, that was discovered first of all, is ______.
Answer: (c) Load stone.
(2) A magnet can attract _____.
Answer: (d) an iron nail.
(3) A material, that is often used to make a temporary magnet, is ______.
Answer: (a) Soft iron.
(4) When we suspend a bar magnet from a thread, it comes to rest along the ______.
Answer: (d) north-south direction.
(5) A device, which generally does not use a magnet, is
Answer: (c) Geyser.
(D) Answer the following questions in brief.
1.) State any two properties of a bar magnet.
Answer:
The bar magnet has the following properties
1.) The bar magnet is capable of attracting small pieces of iron.
2.) A freely suspended magnet always points along the north and south direction.
(2) Maximum iron filling sticks to the two ends of a bar magnet. Why?
Answer:- The strength of the bar magnet is maximum near the poles. This is the reason that maximum iron filling sticks to the end of the bar magnet.
3.) Suppose we bring the north pole of one bar magnet towards the north pole of another freely suspended bar magnet. What are we likely to observe?
Answer:- As we know that opposite poles attract each other and the same poles repuls each other, we can see the repulsion when we bring the north pole of the one bar magnet towards the north pole of another freely suspended bar magnet.
(5) You are given a knitting needle made of steel. How can you make it into a magnet?
Answer:- Needle shows some properties of magnetism so we can make a needle into a bar magnet by keeping a needle near the bar magnet for some time.
(E) Answer the following questions.
1.) Distinguish between the following:
(a) permanent magnets and temporary magnets.
(b) magnetic and non-magnetic materials.
Answer:
(A) The difference between permanent magnets and temporary magnets are as follows –
- Permanent magnets –
Permanent magnets are the magnets that once made remain as a magnet for a long period of time.
The material used to make permanent magnets are steel, ticanol, alnico, cobalt
- Temperature magnets –
Temporary magnets are the magnets that once made remain as a magnet only for a short interval of time. The materials used for making temporary magnets are soft iron and nickel.
- The difference between magnetic and non magnetic materials are as follows –
- Magnetic materials which get attracted towards the magnet are called magnetic materials. Examples of magnetic material are iron, steel, nickel and cobalt.
- Non-magnetic materials –
The materials that do not get attracted towards the magnets are called non-magnetic materials. The examples of non-magnetic materials are wood, paper, plastic etc.
(3) Describe, in brief, the construction of a compass needle. State its main use.
Answer:- A compass has a magnetic needle which is fitted to its centre and the needle is free to rotate in a horizontal plane. The needle is fitted in a box which is covered by glass; the compass also has a dial with a direction mark on it. The main use of the compass is to find out the direction but north and south poles.
(5.) Write the different ways through which magnets can be made to lose their magnetism.
Answer:
Magnets can be used by their magnetism in the following ways.
1.) If the magnets are not kept properly they can lose their magnetism with time.
2.) Magnets can lose their magnetic properties when the magnet is hammered or dropped.
(6) Anushtha saw a steel clip at the bottom of a very shallow puddle of water. She used a magnet, to take out this clip, without wetting her hands, or the magnet. Describe how she must have done this.
Answer: Anushtha needed a strong magnet to attract the steel clips which are located at the bottom and offer a very shallow bottle of water without waiting for her hands or the magnet.
Value based questions
Q.) Aryan, the son of an ‘Army man’, always behaved, towards others, in a polite, helpful and considerate way. He was also a very hard working and disciplined boy. When his father was transferred to a new location, he too had to move to a new school. He soon had many friends in his new school. His teachers would often say:
‘Aryan’s personality helps him to attract friends in the same way as a magnet attracts iron objects towards it’.
(1) State the qualities of Aryan’s personality that you would yourself like to have.
Answer:- Hard working and disciplined are the qualities of Aryan’s personality that I would like to have.
(2) State one practical use of a magnet’s property of attracting iron objects.
Answer:- Magnets are used to store data in computer, magnets also alerts the direction of magnetic materials on a hard disk in a segment then represent on computer. This property of magnet is used in scrapyard to separate iron articles from the scrap.
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