Question 1 :
Artificial magnets are made in different shapes such as _______, _______ and _______.

Question 2 :
,<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c676f59b460d7261e602.jpg' /> Four identical iron bars were dipped in a heap of iron filings one by one. The above figure shows the amount of iron filings sticking to each of them. Which of the iron bar is likely to be the strongest magnet ?

Question 3 :
Paheli and Boojho went to a place where a lot of waste material was piled into huge heaps. Something exciting was happening! A crane was moving towards the heap of junk. The long hand of the crane lowered a block over a heap. It then began to move. What will happen next?

Question 4 :
Spread some iron filings on a sheet of paper. Now, place a bar magnet on this sheet. What do you observe?

Question 5 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e6f59b460d7261e64e.jpg' /> A person magnetises an iron needle using a bar magnet. Now, he inserts the magnetised needle through a small piece of cork or foam. He lets the cork float in water in a bowl or a tub making sure that the needle does not touch the water as shown in the above figure. He rotates the cork, with the needle fixed in it, in different directions. He then notes the direction in which the needle points when the cork begins to float again without rotating. Does the needle always point in the same direction, when the cork stops rotating ?

Question 6 :
The materials which are attracted towards a magnet are called _______.

Question 8 :
Paheli has this puzzle for you. You are given two identical bars which look as if they might be made of iron. One of them is a magnet, while the other is a simple iron bar. How will you find out, which one is a magnet?

Question 9 :
You are given an iron strip. How will you make it into a magnet?

Question 11 :
A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Boat is not affected by the magnet. Which of the following is a reason for this?

Question 12 :
A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Boat moves away from the magnet when north pole is brought near its head. Which of the following is a reason for this?

Question 14 :
What about opposite poles — do they attract or repel each other?

Question 16 :
Fill in the blank: When a bar magnet is broken; each of the broken part will have ................ pole/poles.

Question 17 :
Similar poles of a magnet repel each other. State true or false.

Question 18 :
State true or false: Maximum iron filings stick in the middle of a bar magnet when it is brought near them.

Question 19 :
In olden days, sailors used to find direction by suspending a piece of _______.

Question 20 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e9f59b460d7261e653.jpg' /> A person takes two small toy cars and labels them A and B. He places a bar magnet on top of each car along its length and fix them with rubber bands as shown in the figure. In car A, keep the south pole of the magnet towards its front. Place the magnet in opposite direction in car B. Now, he places the toy cars close to each other such that the rear side of car A faces the front side of car B as shown in the figure. Do they move as before?

Question 21 :
A compass can be used to find East-West direction at any place. State true or false.

Question 22 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c675f59b460d7261e600.jpg' /> Three magnets A, B and C were dipped one by one in a heap of iron filing. Figure above shows the amount of the iron filing sticking to them. The strength of these magnets will be

Question 23 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c672f59b460d7261e5fc.jpg' /> A bar magnet is cut into two pieces A and B, from the middle, as shown in figure above Will the two pieces act as individual magnets?

Question 25 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e7f59b460d7261e650.jpg' /> A person takes two small toy cars and labels them A and B. He places a bar magnet on top of each car along its length and fix them with rubber bands as shown in the figure. In car A, keep the south pole of the magnet towards its front. Place the magnet in opposite direction in car B. Now, he places the two cars close to one another as shown in the figure. Do the cars run away from each other?

Question 26 :
The given shows different positions in which one pole of a magnet is placed near that of the other. The answer indicates the resulting action between them for each situation. [ S - N ] = ?

Question 27 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e1f59b460d7261e647.jpg' /> What materials did you find to be non-magnetic from the above Table?

Question 29 :
Spread some iron filings on a sheet of paper. Now, place a bar magnet on this sheet. Do the iron filings stick all over the magnet?

Question 30 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c677f59b460d7261e603.jpg' /> Boojho dipped a bar magnet in a heap of iron filings and pulled it out. He found that iron filings got stuck to the magnet as shown in above figure . Which regions of the magnet have more iron filings sticking to it ?

Question 31 :
In olden days, sailors used to find direction by suspending a piece of ___________.

Question 32 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e0f59b460d7261e645.jpg' /> Does the magnet with iron filings sticking to it, look like any one of those shown in above figure?

Question 33 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e7f59b460d7261e64f.jpg' /> A person takes two small toy cars and labels them A and B. He places a bar magnet on top of each car along its length and fix them with rubber bands as shown in the figure. In car A, keep the south pole of the magnet towards its front. Place the magnet in opposite direction in car B. Now, he places the two cars close to one another as shown in the figure. Do the cars remain at their places?

Question 34 :
A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Boat gets attracted towards pole magnet. Which of the following is a reason for this?

Question 35 :
Choose the correct option(s) for : Poles of the magnet can be identified by

Question 36 :
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.

Question 37 :
N - N shows positions in which one pole of a magnet is placed near that of the other. Which of the following action indicates this?

Question 39 :
State true or false: A compass can be used to find East-West direction at any place.

Question 40 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6e3f59b460d7261e64a.jpg' /> Spread some iron filings on a sheet of paper. Now, place a bar magnet on this sheet. Do you observe that more iron filings get attracted to some parts of the magnet than others as shown in the figure?