Wednesday, May 29, 2024

Fun with Magnets

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NCERT Solutions for Class 6 Science Chapter 10

The chapter Fun with Magnets introduces the fascinating world of magnets and explores their basic properties and interactions. Here’s a concise summary:

1. What are magnets?

  • The chapter Fun with Magnets defines magnets as materials that attract certain metals, especially iron, nickel, and cobalt.
  • It might briefly touch upon different shapes and sizes of magnets.

2. Properties of magnets:

  • Attraction and repulsion: Magnets exhibit the ability to attract or repel other magnets.
  • Poles: Every magnet has two distinct ends called poles: a north pole and a south pole.
  • Like poles repel: Like poles (two north poles or two south poles) of different magnets repel each other.
  • Unlike poles attract: Unlike poles (a north pole and a south pole) of different magnets attract each other.

3. Magnetic materials and non-magnetic materials:

  • The chapter Fun with Magnets differentiates between magnetic materials that are attracted to magnets (like iron) and non-magnetic materials that are not affected by magnets (like plastic or wood).

4. Making a magnet:

  • The chapter Fun with Magnets might introduce a simple method for magnetizing an iron nail by rubbing it with a strong magnet in a particular direction.

5. Uses of magnets:

  • The chapter Fun with Magnets might briefly mention some everyday applications of magnets, such as:
    • Holding objects: refrigerator magnets, magnetic clips on whiteboards
    • Compasses: navigating direction using Earth’s magnetic field
    • Electric motors and generators: for converting electrical energy to mechanical energy and vice versa.

Additional points:

  • The chapter Fun with Magnets might use diagrams and illustrations to explain the properties of magnets, their poles, and the concept of attraction and repulsion.
  • Simple experiments or demonstrations might be used to reinforce the concepts learned.

NCERT Solutions for Class 6 Science Chapter 10 Fun with Magnets

Exercises

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 olden days, sailors used to find direction by suspending a piece of______

(v) A magnet always has_______poles.

Ans : i) Bar magnet, Horseshoe magnet, and Cylindrical magnet.

(ii) Magnetic materials.

(iii) Magnetic 

(iv) Magnetized iron.

(v)Two

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.

Ans : (i) False

(ii) False

(iii) True

(iv) True

(v) False

(vi) False

(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.

Ans : While the exterior body of a pencil sharpener might be made of plastic, which is non-magnetic, the reason it gets attracted to both poles of a magnet is likely because it has a metal blade inside.

Here’s the reasoning:

  • Magnets attract magnetic materials: Only materials with magnetic properties can be attracted by magnets.
  • Plastic is non-magnetic: Since the sharpener’s body is made of plastic, it cannot be the reason for the attraction.
  • Metal blades are magnetic: Most pencil sharpeners have blades made of iron or steel, which are ferromagnetic materials. These materials are strongly attracted to magnets.

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.

Column IColumn II
N – N_____
N –  ____Attraction
S – N______
_______- SRepulsion

Ans : 

Column IColumn II
N – NRepulsion
N –  SAttraction
S – NAttraction
S – SRepulsion

5. Write any two properties of a magnet.

Ans : Attraction and Repulsion: Magnets exhibit the ability to attract certain materials and repel others.

Two Poles: Every magnet has two  distinct ends called pole . a north pole and a south pole. These poles are the regions where the magnetic force is strongest.

6. Where are poles of a bar magnet located?

Ans : The poles of a bar magnet are located at its ends. These ends are not perfectly concentrated points but rather regions where the magnetic field is strongest.

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

Ans : There are two common methods to determine the north pole of an unmarked bar magnet:

1. Using a compass:

  • Materials: An unmarked bar magnet and a compass.
  • Procedure:
    1. Hold the compass flat on a stable surface.
    2. Bring the unmarked bar magnet slowly towards the compass, keeping it parallel to the compass needle.
    3. Observe the compass needle. As you move the bar magnet closer, one end will cause the compass needle to deflect.
    4. The end of the bar magnet that repels the north end of the compass needle (causing it to deflect away) is the south pole of the bar magnet.
    5. Therefore, the opposite end of the bar magnet is the north pole.

2. Suspension method:

  • Materials: An unmarked bar magnet, a string, and a stand or support.
  • Procedure:
    1. Tie a string securely around the middle of the bar magnet.
    2. Hang the magnet from the string on a stand or support, allowing it to swing freely.
    3. Wait for the magnet to come to rest. Once it stops swinging, it will be aligned roughly north-south due to the Earth’s magnetic field.
    4. The end of the bar magnet that points approximately towards the north is the north pole.

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

Ans : Here are two methods you can use to magnetize an iron strip:

1. Stroking method:

  • Materials: An unmagnetized iron strip and a strong bar magnet.
  • Procedure:
    1. Place the iron strip on a flat surface.
    2. Hold the bar magnet in your hand with its north pole (marked or identified using a compass) at one end of the iron strip.
    3. Stroke the bar magnet along the entire length of the iron strip in the same direction, from one end to the other. Apply moderate pressure while stroking.
    4. Lift the bar magnet completely off the iron strip after reaching the end.
    5. Repeat steps 2 to 4, stroking in the same direction for 20-30 times.
    6. After completing the strokes, the iron strip should be magnetized.

2. Touch and hold method:

  • Materials: An unmagnetized iron strip and a strong bar magnet.
  • Procedure:
    1. Place the iron strip on a flat surface.
    2. Hold the bar magnet with its north pole (marked or identified using a compass) touching one end of the iron strip.
    3. Firmly press the bar magnet against the iron strip for a few seconds.
    4. Without lifting the bar magnet, slide it along the entire length of the iron strip to the other end, maintaining contact with the strip.
    5. Once reaching the other end, lift the bar magnet completely off the iron strip.
    6. Repeat steps 2 to 5 20-30 times.
    7. After completing the repetitions, the iron strip should be magnetized.

9. How is a compass used to find directions?

Ans : A compass helps find directions by interacting with Earth’s magnetic field, which acts like a giant magnet with invisible north and south poles. Here’s how it works:

1. Magnetic needle: The key component of a compass is a magnetized needle. This needle is free to rotate and aligns itself with the Earth’s magnetic field.

2. Magnetic field interaction: The north pole of the magnetized needle is attracted to the Earth’s south magnetic pole and vice versa. This attraction pulls the needle into alignment with the Earth’s magnetic field lines.

3. Direction markings: The compass has a dial or rose marked with the cardinal directions: north (N), south (S), east (E), and west (W). These markings are aligned with the magnetized needle, allowing you to read the direction based on the needle’s orientation.

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

Column IColumn II
Boat gets attracted towards the magnetBoat is fitted with a magnet with north pole towards its head
Boat is not affected by the magnetBoat is fitted with a magnet with south pole towards its head
Boat moves towards the magnet if north pole of the magnet is brought near its headBoat has a small magnet fixed along its length
Boat moves away from the magnet when north pole is brought near its headBoat is made of magnetic material
Boat floats without changing its directionBoat is made up non-magnetic material

Ans : 

Column IColumn II
Boat gets attracted towards the magnetBoat is fitted with a magnet with south pole towards its head
Boat is not affected by the magnetBoat is made up non-magnetic material
Boat moves towards the magnet if north pole of the magnet is brought near its headBoat has a small magnet fixed along its length
Boat moves away from the magnet when north pole is brought near its headBoat is fitted with a magnet with north pole towards its head
Boat floats without changing its directionBoat is made of magnetic material

NCERT Solutions for Class 6 Science Chapter 10 Fun with Magnets

FAQ’s

What topics are covered in NCERT Solutions for Class 6 Science Chapter 10 Fun with Magnets?

NCERT Solutions for Class 6 Science Chapter 10 covers various topics related to magnets, including magnetic materials, types of magnets, magnetic poles, and their applications.

How can NCERT Solutions for Class 6 Science Chapter 10 help in understanding magnets better?

NCERT Solutions provide detailed explanations, solved examples, and exercises that help students understand the concepts of magnets more effectively

How can I access NCERT Solutions for Class 6 Science Chapter 10 Fun with Magnets?

NCERT Solutions for Chapter 10 can be accessed online through educational website education85.

Are NCERT Solutions for Class 6 Science Chapter 10 suitable for self-study?

Yes, NCERT Solutions are designed to be self-explanatory and comprehensive, making them suitable for self-study. They provide clear explanations and step-by-step solutions to help students grasp the concepts of magnets at their own pace.

Can NCERT Solutions for Class 6 Science Chapter 10 help in preparing for exams?

Yes, NCERT Solutions provide practice questions and exercises at the end of each chapter, which are designed to help students prepare for exams. By solving these questions, students can assess their understanding of the concepts and improve their exam readiness.

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