TS 6th Class Science Important Questions 2nd Lesson Playing with Magnets

These TS 6th Class Science Important Questions 2nd Lesson Playing with Magnets will help the students to improve their time and approach.

TS 6th Class Science Important Questions 2nd Lesson Playing with Magnets

Question 1.
What is a magnet?
Answer:
The substance which holds or attracts other substances naturally is called a magnet.

Question 2.
Give two examples of magnetic material.
Answer:
Iron, cobalt, magnetite etc.

Question 3.
Explain the discovery of the story of the magnet.
Answer:

• Around 2500 years ago, a shephered named Magnus used to take his sheep in the hills for grazing.
• He used to carry an iron cap stick to control the sheep.
• One day, on the way towards the stream at the site of grazing, he felt that his iron cap stick was stuck to the bottom of the water.
• He found the stone that stuck his stick. It is called lode stone.
• It is a natural magnet and possesses the property of attracting iron. Since then the stone is called “Magnet”.

Question 4.
What are magnetic materials and non-magnetic materials? Give examples.
Answer:

• The materials that are attracted by magnets are called magnetic materials.
  Eg : Iron, cobalt, magentite etc.
• The materials that are not attracted by magnets are called non – magnetic materials.
  Eg: Plastic, paper, cloth etc.

Question 5.
What is meant by the directional property of the magnet?
(or)
What directions does a freely suspended bar magnet show?
Answer:
Magnet always comes to rest in the North – South direction.
One end of the magnet which points towards north is called north pole.
The other end of the magnet which points towards the south is called south pole.
This is the directional property of magnet.

Question 6.
Describe the structure (construction) of magnetic compass ? Write its uses.
Answer:

• A compass is usually a small box with a glass covering on it.
• A magnetised needle is pivoted inside the box in such a way that it can rotate freely.
• The compass also has a dial with directions marked on it.
• The needle in the compass indicates the North-South direction when it comes to rest.
• Both ends of the needle are painted in different colours to specify the North-South directions.

Uses:

• A compass is used to find directions.
• It is mostly used in ships and aeroplanes.
• Mountaineers and army people also carry a compass with them to avoid confusion over unknown area.

Question 7.
Observe the following table. Write which are magnetic or non-magnetic materials in the relevant column.
Answer:
Plastic, iron, wood, gold.

S.No	Material	Magnetic/non -magnetic
1.	Plastic	Non – magnetic
2.	Iron	Magnetic
3.	Wood	Non – magnetic
4.	Gold	Non – magnetic

Question 8.
Which instrument is used to find the directions?
Answer:
Bar magnet.

Question 9.
What is magnetic induction?
Answer:
Magnetic property possessed by a magnetic substance due to the presence of a magnet near to it, is called magnetic induction.

Question 10.
What do the letters denote in magnetic compass?
Answer:
The letter N that is indicated at one end of the compass shows north pole. The letter that is indicated at another end shows south pole.

Question 11.
Find out the following material attracted by magnets or not.
a. nail
b. knife
c. steel
d. blade
e. pen

Name of the object	Material of which the object is made	Attracted by magnet yes/no
jump clip	iron	yes

Answer:
The above given material is tested with the magnet and the results are taken as follows.

Name of the object	Material of which the object is made	Attracted by magnet yes/no
1. nail	iron	yes
2. knife	steel	no
3. steel	steel	no
4. blade	iron	yes
5. pen	plastic	no

Question 12.
Prepare three analytical questions on
1. Magnetic induction
2. Magnetic property
Answer:
1. Magnetic induction:

• What is magnetic induction?
• How can we use magnetic induction in our daily life?
• Conduct an experiment on magnetic induction.

2. Magnetic property:

• Define magnetic property.
• Can we find out magnetic property in the bar magnet?
• Write the nature of magnetic property.

Question 13.
What questions will you ask your teacher about uses of magnet?
Answer:

• How are magnets useful?
• Where do we use magnets?
• Which places are suitable to use magnets?

Question 14.
What would happen if magnets do not have poles?
Answer:

• If magnets do not have poles it will be impossible to find the North-South directions of the earth.
• We cannot magnetise any magnetic material properly.

Question 15.
What are the problems to be seen if there are no magnets?
Answer:
The following problems arise due to absence of magnets:

• We cannot construct a compass.
• Cranes and lifts cannot gain extra strength for working properly.
• It will be impossible to frame automatic closing doors.
• It will be difficult to find the North – South directions of the earth.
• We cannot see magnetic dependent toys.

Question 16.
To know about magnets in detail what questions will you ask?
Answer:

• Where do we see natural magnets?
• Why do only some substances show magnetic property?
• What is the importance of magnetic substances?
• Can’t we create magnetism in all the substances?
• What are the uses of magnets?

Question 17.
How can you separate iron filings from soil?
Answer:
Aim : To separate iron filings from soil.
Procedure: A bar magnet is rolled in the soil in the school ground for some time. Then it is pulled out.
Observation : It is observed that the dark particles of soil are sticking to the magnet.
Result : The dark particles are collected in a sheet of paper. They are called iron filings.

Question 18.
If an iron piece is given to you, how do you make it as a magnet?
(Or)
How can you make your own magnet with simple material?
(Or)
Write an hypothesis when the edge of a nail is rubbed with the pole of
bar magnet.
Answer:
Aim : To make a magnet with simple material.
Required material : Iron nail, bar magnet, table etc.
Procedure:

• Iron nail is taken and kept on a table.
• A bar magnet is taken and one of its poles is placed near one edge of the nail.
• Without lifting the bar magnet it is moved along the length of the iron nail till it reached the other end.
• Then the bar magnet is lifted and brought to the first end of the nail. It is moved along the length again.
• Magnet is taken among some iron filings or alpins and brought close to the nail

Observation : The iron filings or alpins get attracted by the nail.
Result : Thus making own magnet is a success by using nail.

Question 19.
How can you conclude that every bar magnet has two ends.
(or)
Explain the procedure and observations in the experiment knowing magnetic poles position.
Answer:
Aim : To conclude that every bar has two ends.

Apparatus : Sheet of paper, iron filings, bar magnet.
Procedure: Certain amount of iron filings are placed on the white paper.
A bar magnet is placed below the sheet.

Observation : It is observed that the uniformly spread iron filings tried to concentrate at two points of the paper sheet at some distance. We found some scattered iron filings between these two points whereas the iron filings are mostly concentrated on the two ends of the magnet.

Inference : The ends of the bar magnet attract more iron filings than the middle part of the magnet.

Question 20.
Find out the directions with a bar magnet.
(or)
Explain the experiment to know the directions with the help of bar magnet with the precautions.
Answer:

• A bar magnet is suspended freely with the help of a thread tied around its centre.
• It is noticed that the magnet finally takes a position in the North-South direction.
• Mark the end that points towards the North with same colour.
  Precautions : We should see that the magnet should be suspended with the help of a thread

Question 21.
What is the magnetic induction? Describe a simple experiment to show magnetic induction.
(or)
Explain magnetic induction.
Answer:
Magnetic property possessed by a magnetic substance due to the presence of a magnet near it, is called magnetic induction. Experiment to show magnetic induction:

• One safety pin is taken and brought close to one pole of a bar magnet.
• It is observed that the safety pin gets attached to the magnet.
• Then an alpin is brought close to the magnet.
• It is observed that an alpin gets attached to safety pin.
• We noticed that the safety pin acts as a magnet. Magnetic property is induced in safety pin due to the bar magnet.

Question 22.
Which property of magnet is explained by this diagram?
Answer:
First picture shows unlike poles of two bar magnets attract each other.
Second picture shows like poles of two bar magnets repel each other.

Question 23.
Draw diagrams of
a. Bar magnet
b. Ring magnet
c. Horse shoe magnet.
d. Disc magnet
(or)
Draw and name four different types of magnets.
Answer:

Question 24.
Observe the following diagram. What do you find from this?
Answer:

• Freely suspended magnet always shows north and south poles.
• One end of the bar magnet shows north pole. The other end of the magnet shows south pole.
• This property of magnet is called directional property.

Question 25.
Draw a neat labelled diagram of a magnetic compass.
Answer:

Question 26.
Draw a neat labelled diagram showing the earth magnetism by labelling North-South directions.
Answer: