# Fun with Magnets | Chapter 13 | Class 6 | Science | NCERT

## Exercise

1. 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.

(i) Artificial magnets are made in different shapes such as bar magnethorse shoe and cylindrical.

(ii) The materials which are attracted towards a magnet are called magnetic.

(iii) Paper is not a magnetic material.

(iv) In the olden days, sailors used to find direction by suspending a piece of magnet.

(v) A magnet always has two poles.

2. State whether the following statements are true or false:

(i) A cylindrical magnet has only one pole.

(ii) Artificial magnets were discovered in Greece.

(iii) Similar poles of a magnet repel each other.

(iv) Maximum iron filings stick in the middle of a bar magnet when it is brought near them.

(v) Bar magnets always point towards North-South direction.

(vi) A compass can be used to find East-West direction at any place.

(vii) Rubber is a magnetic material.

i) False

ii) False

iii) True

iv) False

v) True (Freely suspended bad magnet)

vi) True

vii) False

3. 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.

Iron might have been used to make some part of it.

4. 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.

5. Write any two properties of a magnet.

Properties of a magnet are as follows

• It attracts objects made of Nickel, Cobalt and Iron.
• Like poles of two magnets repel each other and opposite poles attract each other.

6. Where are poles of a bar magnet located?

On two ends of a bar magnet.

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

A bar magnet is hung in the air, and the end pointing to the north is the north pole of the magnet.

8. You are given an iron strip. How will you make it into a magnet?

Take a bar magnet and keep in contact with one of its poles with one edge of the bar of iron.

• Without lifting the bar magnet, move it along the length of the iron bar till you reach the other end.
• Lift the magnet and bring the pole (the same pole you started with) to the same point of the iron bar from which we began.
• Move the magnet again along the iron bar in the same direction as you did before.
• Repeat this process for about 30-40 times.

9. How is a compass used to find directions?

A compass always shows north and south directions; by keeping this as a reference, we can always find east and west directions also.

10. A magnet was brought from different directions towards a toy boat that has been floating in 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.

## NCERT Class 6 Science

Chapter 1: Food: Where Does It Come From?

Chapter 2: Components of Food

Chapter 3: Fibre to Fabric

Chapter 4: Sorting Materials and Groups

Chapter 5: Separation of Substances

Chapter 6: Changes Around Us

Chapter 7: Getting to Know Plants

Chapter 8: Body Movement

Chapter 9: The Living Organisms and Their Surroundings

Chapter 10: Motion and Measurement of Distances

Chapter 11: Light, Shadows and Reflections

Chapter 12: Electricity and Circuits

Chapter 13: Fun with Magnets

Chapter 14: Water

Chapter 15: Air Around Us

Chapter 16: Garbage In, Garbage Out