NCERT Solutions: Fun With Magnets

# NCERT Solutions for Class 8 Science Chapter 10 - Fun With Magnets

Q1. Fill in the blanks in the following:
(i) Artificial magnets are made in different shapes such as ______, ______ and ______.
(ii) The Materials which are attracted towards a magnet are called ______.
(iii) Paper is not a ______ material.
(iv) In the olden days, sailors used to find direction by suspending a piece of ______.
(v) A magnet always has ______ poles.

Ans:
(i) Artificial magnets are made in different shapes such as bar-magnet, cylindrical magnets and horseshoe magnets.

Cylindrical magnet(ii) The Materials which are attracted towards a magnet are called magnetic materials.
(iii) Paper is not a magnetic material.
(iv) In the olden days, sailors used to find direction by suspending a piece of bar magnet.

(v) A magnet always has two poles.
Magnet having two poles (North & South)Q2. State whether the following statements are true or false.

Question for NCERT Solutions: Fun With Magnets
Try yourself:(i) A cylindrical magnet has only one pole.

Question for NCERT Solutions: Fun With Magnets
Try yourself:(ii) Artificial magnets were discovered in Greece.

Question for NCERT Solutions: Fun With Magnets
Try yourself:(iii) Similar poles of a magnet repel each other.

Question for NCERT Solutions: Fun With Magnets
Try yourself:(iv) Maximum iron filings stick in the middle of a bar magnet when it is brought near them.

Question for NCERT Solutions: Fun With Magnets
Try yourself:(v) A freely suspended Bar magnets always point towards North-South direction.

Question for NCERT Solutions: Fun With Magnets
Try yourself:(vi) A compass can be used to find East-West direction at any place.

Question for NCERT Solutions: Fun With Magnets
Try yourself:(vii) Rubber is a magnetic material.

Q3. 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.
Ans: There is a blade in pencil sharpener which is made up of iron. Iron is a magnetic material that is why it is attracted by the poles of magnet.

Q4. 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.

Ans:

Q5. Write any two properties of a magnet.
Ans: Two properties of a magnet are as follows:
(i) Like magnetic poles repel each other and unlike magnetic poles attract each other.
(ii) A freely suspended magnet always aligns in N-S direction.

Q6. Where are poles of a bar magnet located?
Ans: The poles of bar magnet are located at its two end points.
Two Poles

Q7. A bar magnet has no markings to indicate its poles. How would you find out near which end is its north pole located?
Ans:

• The location of the poles of a magnet can be determined by suspending it freely.
• A freely suspended bar magnet always points in the north−south direction
• The end that points towards the north direction is the north pole of the magnet while the end that points towards the south direction is the south pole of the magnet.

Q8. You are given an iron strip. How will you make it into a magnet?
Ans: An iron strip can be converted into a magnet by the following method:

• Place the iron strip on a table.
• Place one pole of a bar magnet near one end of the iron strip. Move the bar magnet along the length of the iron strip starting from one end to the other end as shown in the following figure.
• Then, lift the magnet and bring the pole to the starting point and move in the same direction as before.

• On repeating this process for at least 30-40 times, the iron strip will become a bar magnet with two poles.

Q9. How is a compass used to find directions?
Ans:

• A compass has a magnetic needle that can rotate freely.
• When a compass is kept at a place, the magnetic needle aligns in north-south direction
• The red arrow of the compass needle is termed as the north pole and the other end as south pole.

A Compass

Q10. A magnet was brought from different directions towards a toy boat that has been floating on water in a tub. The effect observed in each case is stated in Column I. Possible reasons for the observed effects are mentioned in Column II. Match the statements given in Column I with those in Column II.

Ans:

The document NCERT Solutions for Class 8 Science Chapter 10 - Fun With Magnets is a part of the Class 6 Course Science Class 6.
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## FAQs on NCERT Solutions for Class 8 Science Chapter 10 - Fun With Magnets

 1. What is the concept of magnetism?
Ans. Magnetism is the property of certain materials to attract or repel other materials. It is caused by the alignment of the electrons within the material, creating a magnetic field.
 2. How do magnets work?
Ans. Magnets work based on the interaction between their magnetic field and the magnetic field of other materials. The magnetic field of a magnet is created by the alignment of its electrons. When two magnets come close, their magnetic fields interact, resulting in attraction or repulsion.
 3. What are the different types of magnets?
Ans. There are several types of magnets, including permanent magnets, temporary magnets, electromagnets, and natural magnets. Permanent magnets retain their magnetism without any external influence, while temporary magnets only exhibit magnetic properties when in the presence of a magnetic field. Electromagnets are created by passing an electric current through a coiled wire, and natural magnets are naturally occurring minerals with magnetic properties.
 4. How can magnets be used in everyday life?
Ans. Magnets have various uses in everyday life. They are used in electric motors, generators, speakers, and headphones. Magnets are also used in magnetic storage devices like hard drives and credit cards. In addition, magnets are used in magnetic therapy, where they are believed to have healing properties.
 5. How can magnets be used for sorting materials?
Ans. Magnets can be used to sort materials based on their magnetic properties. For example, ferromagnetic materials like iron and steel can be easily attracted to magnets, while non-magnetic materials like wood or plastic are not affected. This property can be used to separate magnetic and non-magnetic materials in various industries, such as recycling or mining.

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