AP Board 6th Class Science Important Questions Chapter 6 Fun with Magnets

AP State Syllabus AP Board 6th Class Science Important Questions Chapter 6 Fun with Magnets

AP State Syllabus 6th Class Science Important Questions 5th Lesson Fun with Magnets

6th Class Science 6th Lesson Fun with Magnets 2 Mark Important Questions and Answers

Question 1.
Explain why do pins get attached to the cap of the pin holder.
Answer:
Pins get attached to the cap of the pin holder because it contains a magnet.

Question 2.
Why the natural magnets are called leading stones?
Answer:
Natural magnets are used for finding direction, So they are also called ‘leading stones’ or ‘lode stones’.

Question 3.
From which part of the magnet do you feel more difficulty in removing iron filings?
Answer:
I felt more difficulty in removing iron filings from the poles of the magnet.

Question 4.
What property of the magnet is used to make the magnetic compass?
Answer:
The directional property of the magnet is used to make the magnetic compass.

Question 5.
What is the important precaution you have to take with the magnetic compass?
Answer:
The magnetic compass and magnets should not be put together.

Question 6.
What will happen to the magnet when we cut it into two pieces?
Answer:
When we cut a bar magnet into two pieces, both these pieces act as magnets and we get two magnets.

Question 7.
How can you separate metal scrap from a heap of waste materials in a scrap yard?
Answer:
We can separate metal scrap from a heap of waste materials in a scrap yard with the help of magnets.

Question 8.
You are given a bar magnet How will you find out the west direction?
Answer:
The two poles of a bar magnet point towards the north and south direction, so the west direction can be easily located.

Question 9.
A carpenter by chance mixes iron nails and screws with wood shavings while working. How can you help him in getting back the nails and screws from the wood shavings?
Answer:
We can’ help him in getting back the nails and screw from wood shavings with the help of a magnet.

Question 10.
What is magnetic induction?
Answer:
The magnetic property possessed by a magnetic substance due to the presence of a magnet near it is called ‘magnetic, induction’.

Question 11.
What is the sure test for magnetism?
Answer:
Repulsion and not attraction is the sure test for magnetism.

Question 12.
What is meant by the directional property of magnets?
Answer:
A freely suspended magnet always come to rest in north and south directions. This property of magnets is called a directional property.

Question 13.
On what principle electromagnetic trains work?
Answer:
Electromagnetic trains work on the principle that – Magnetic objects can levitate by using repulsion.

Question 14.
Draw the diagram of the horseshoe magnets.
Answer:

6th Class Science 6th Lesson Fun with Magnets 4 Mark Important Questions and Answers

Question 1.
What are magnetic and non magnetic materials? Give examples.
Answer:

1. The materials that are attracted by magnets are called magnetic materials.
2. Examples: Iron, Steel, Cobalt, etc.
3. The materials that are not attracted by magnets are called non-magnetic substances.
4. Examples: Brass, Plastic, Wood, Paper, etc.

Question 2.
Which part of the bar magnet attracts more iron filings? What do you conclude from this?
Answer:

1. The ends of the bar magnet attract more iron filings than the middle part of the magnet.
2. We conclude that every bar magnet always has two ends whose attracting capacity is more than its other parts.
3. These ends are called ‘Poles’ of the magnet.

Question 3.
When do magnets attract each other?
Answer:

1. When two bar magnets with their opposite poles are placed side by side at a small distance the magnets attract each other.
2. Opposite poles of the magnets attract.

Question 4.
When do the magnets repel each other?
Answer:

1. When two magnets with their like poles are placed side by side at a small distance the magnets repel each other.
2. Like poles of the magnets repel.

Question 5.
Fill up the following table.

Poles	They are called	We observe
North – ………..	…………..	Attraction
North – North	Similar poles	……………..
……………….	Similar poles	Repulsion
South – North	Opposite poles	……………..

Answer:

Poles	They are called	We observe
North – South	Opposite poles	Attraction
North – North	Similar poles	Repulsion
South – South	Similar poles	Repulsion
South – North	Opposite poles	Attraction

Question 6.
How is a compass used to find directions?
Answer:

1. A compass has a magnetic needle attached to it which can rotates freely.
2. The magnet always points to N – S direction which is marked on compass and thus help in finding direction.

Question 7.
Why is compass needle kept in a closed glass vessel?
Answer:

1. The compass needle is a small and thin magnet used to find the direction.
2. If it is kept in open, it may deflect in any direction.
3. So to know right direction, it is kept covered by glass covering.

Question 8.
What is the use of a magnetic compass?
Answer:

1. A magnetic compass is used to find directions.
2. It is mostly used in ships and airplanes.
3. Mountaineers and army people also carry a compass with them so that they do not lose their way in an unknown place.

Question 9.
Rajani needs some iron filings to conduct experiments with magnets. She don’t know how to collect them. Help her by explaining the process of collecting iron filings?
Answer:

1. In the experiments with magnets, we need to use iron filings again and again.
2. We can collect these by placing a magnet in a pile of sand and turning it around in the sand.
3. The small pieces of iron present in the sand will stick to the magnet.
4. If we cannot find sand we can look for iron pieces in clay soil as well.

Question 10.
‘Like poles repel each other and unlike poles attract each other” – How can you prove this statement?
Answer:

1. Take two similar bar magnets.
2. Bring the south pole of a bar magnet close to the south pole of another bar magnet. They repel each other.
3. Now bring the north pole of a bar magnet close to the north pole of another bar magnet. They also repel each other. This confirms like poles repel each other.
4. Now bring the south pole of a bar magnet to the north pole of another bar magnet, vice versa. They attract each other confirming that unlike poles attract each other.

Question 11.
How do the properties of magnets get destroyed?
Answer:

1. Magnets lose their properties if they are heated or dropped from a height or hit with a hammer.
2. Magnets lose their properties when they are placed near Cell phone, Computer, DVDs.
3. Improper storage can also cause magnets to lose their properties.

Question 12.
Write the cations for the proper storage of magnets.
Answer:

1. Improper storage can cause magnets to lose their properties.
2. To keep them safe, bar magnets should be kept in pairs with their unlike poles on the same side.
3. They must be separated by a piece of wood and two pieces of soft iron should be placed across their ends.
4. For a horse-shoe magnet a single piece of soft iron can be used as a magnetic keeper across the poles.

Question 13.
What is a suspension train? On what principle it works?
Answer:

1. An Electromagnetic train is called a suspension train or a flying train.
2. It does not require either diesel or petrol.
3. This technology uses the property of magnetic attraction and repulsion to run these super fast electromagnetic trains.
4. Electromagnetic train work on the principle of magnetic levitation. That is – A magnetic object can levitate by using repulsion.

Question 14.
Write the differences between natural magnets and artificial magnets.
Answer:

Natural Magnets	Artificial magnets
1. They occur naturally in nature.	1. They are man made magnets..
2. These are obtained from their ore.	2. They are obtained by magnetization of magnetic materials such as iron.
3. They do not have definite shape	3. They are prepared in different shapes such as round, ring, disc, horse shoe etc.
4. They are called lead stones or leading stones.	4. They are named after their shapes.

6th Class Science 6th Lesson Fun with Magnets 8 Mark Important Questions and Answers

Question 1.
Describe the story of the discovery of magnets?
Answer:

1. About 2500 years back in a place named magnesia in Greek, there lived a shepherd named Magnus.
2. One day while his goats were grassing he took a hap on a rock by keeping his iron caped stick and iron nailed boots on that rock.
3. When he woke up, he found that his iron-capped stick stuck on the rock and stood erect. His iron-nailed boots also stuck on the fock.
4. The entire village assembled there to see this magic.
5. People wondered about this incident, each and everyone expressed their views in different ways.
6. People found it attractive not only the stick of Magnus but also all other materials made of iron.
7. more rocks of these kinds were found worldwide.
8. These magnetic rocks were named ‘Magnets’ and the ore is called ‘Magnetite’ after the name of the boy Magnus.

Question 2.
Describe the construction of a magnetic compass. How is it used? What are its uses? (Imp.)
Answer:
Magnetic Compass:
Description:

1. A compass is usually a small box with glass covering it.
2. A magnetized needle is pivoted inside the box in such a way that it can rotate freely.
3. The compass also has a dial with directions marked on it.

Working with Compass:

1. The compass is kept at the place where we wish to know the direction.
2. Its needle indicates the North-South direction when it comes to rest.
3. The compass is then rotated until the north and south marked on the dial are exactly below the two ends of the needle.
4. To identify the North pole of the magnetic needle, it is usually painted in a different color (see Fig.).
   
5. Then we identify north and south at that place.
6. After that we can also identify the East and West between them.

Uses:

1. A compass is used to find directions and in ships & airplanes.
2. Mountaineers and army people also carry a compass with them so that they do not lose their way in an unknown place.

Question 3.
Observe the picture and answer the following questions.

a) What are the materials required to do this experiment?
b) What precautions you would take while doing this experiment?
c) In which direction the magnet show when it stands rest?
d) What is the instrument made based on this experiment/property?
Answer:
a) Required material:

1. Bar magnet
2. Thread
3. Stand

b) Suspend the bar magnet freely with help of a strong thread tied to the center of the bar magnet.
c) North-South direction.
d) Magnetic compass.

Question 4.
i) According to the pictures write whether rat attracts or repels to the food in the bowl.
ii) Give reasons.

Answer:
A) Rat attracts to the food in the bowl.  Reason: Unlike poles attract each other.
B) Rat repels to the food in the bowl. Reason: Like poles repel each other.
C) Rat attracts to the food in the bowl. Reason: Unlike poles attract each other.
D) Rat repels to the food in the bowl. Reason: Like poles repel each other.

Question 5.
Observe the picture.

i) Identify the name of the picture.
ii) In which direction the magnet needle show when it comes to rest?
iii) What property of the magnet is used to make the instrument?
iv) What is the use of that Instrument?
Answer:
i) Magnetic, compass.
ii) North-South direction.
iii) The directional property of the magnet is used to make the magnet compass.
iv) We use it to find out the direction.

Question 6.
How do you find whether the given object is a magnet or not? You are given three objects of the same size, shape, and color and a bar magnet. Describe your activity.
Answer:
The procedure of the activity:
I bring three objects one after the other close to one pole of the bar magnet and observe whether they get attracted, repelled, or not attracted.
Conclusions:

1. If an object is attracted by one pole of the bar magnet and repelled by its other pole, then I can say that it is a magnet.
2. If an object is attracted by both the poles of a bar magnet and not repelled by any
   pole, then I can say that it is not a magnet but a magnetic substance.
3. If an object is neither attracted by a magnet nor repelled by it, then I can say that it is neither a magnet nor a magnetic substance.

Question 7.
Write a short note on the properties of magnets.
Answer:

1. Magnets attract magnetic materials.
2. A magnet always has two ends whose attracting capacity is more than the parts of it. The poles of the magnet lie at these birds.
3. Each magnet has two magnetic poles: North and South.
4. Like Poles (N-N, S-S) repel each other and unlike poles (N-S, S-N) attract each other.
5. A freely suspended magnet always aligns in the North-South direction.
6. Magnets lose their properties if they are heated or dropped from a height hit with a hammer.

Question 8.
How can you prove that a bar magnet possesses two poles?
Answer:
Aim: To prove that a bar magnet possesses two poles.

What do you need? (Materials required): Iron filings, a sheet of paper, bar magnet.
What to do? (Procedure):

1. Spread some iron fillings uniformly on a sheet of paper.
2. Place a bar magnet below this sheet.

What do you see? (Observation):

1. We will notice that the uniformly spread iron filings come close and get concentrate at two points of the paper sheet.
2. At some distance, we will find some scattered iron filings between these two points.

What do you learn? (Result): Thus the ends of the bar magnet attract more iron filings than the middle part of the magnet. By this activity we can conclude that every bar magnet always has two ends whose attracting capacity is more than its other parts. These ends are called poles of the magnet.

Question 9.
How can you demonstrate the directional property of a bar magnet?
Answer:
Aim: To demonstrate the directional property of a bar magnet.
What do you need? (Materials required): Bar magnet, thread, stand and colour.
What to do? (Procedure):

1. Suspend the bar magnet freely with the help of a thread tied around its center.
   
2. The magnet finally takes a position in the North-South direction.
3. Mark the end points towards the North with some color.
4. Now disturb the magnet and again wait for some time.

What do you see? (Observation):
Magnets always come to rest in the North-South direction. In each case the marked endpoints towards North.
What do you learn? (Result): The marked end is known as the North pole of the magnet. The other end, which points towards the South is known as the South pole of the magnet. This property of magnets is called directional property.

Question 10.
Draw different shapes of magnets available in your area.
Answer: